Here is an excerpt from an excellent thread reasonomg on this very thing. Link to the thread afterwards. Well worth a read:
Solomon’s temple was a lot smaller than most people picture it. 1 Kings 6:2 tells us that it was 60 cubits long, 20 cubits wide, and 30 cubits high. In a rare example of biblical precision, 2 Chronicles 3:3 gives exactly the same measurements. A cubit is 17.5 inches, so the temple would have been 87.5’ x 29’, and about 4 stories high. It would total 2,552 square feet in area. To put this in perspective, it would be less than twice the size of my house, but four stories high. This number is very important, so keep it in mind.
The total temple area was larger than simply the “house of the LORD”. There was a courtyard, a palace, and other buildings. However, as we will soon see, the contents and value are out by at least a factor of a thousand, so, a few extra buildings are hardly significant.
The Gold and Silver
“With great pains I have provided for the house of the LORD, a hundred thousand talents of gold, a million talents of silver, and bronze and iron without weighing, for there is so much of it; timber and stone, too, I have provided.” - 1 Chronicles 22:14
Since 1 talent = 75.5 pounds, this means that 7.55 million pounds of gold and 75.5 million pounds of silver went into the temple - a total of 83.05 million pounds of precious metal. Now, remember the size of the temple. To get this much gold and silver into the temple, there must have been 32,543 pounds of it per square foot. The priest must have had to crawl over the heaps of gold to get to the alter.
Here’s another interesting tidbit. One cubic foot of silver weighs 628.4 pounds. This means that the silver of the temple occupied 120,146 cubic feet. The total gross size of the temple was only 111,650 cubic feet. Therefore, if the silver of the temple was formed into a solid block, it would be bigger than the temple itself - never mind the gold, iron, bronze, timber, and stone.
In addition to the gold and silver, there was apparently so much bronze and iron that it could not even be weighed. Since the gold and silver weighed in at 83 million pounds, that means that the bronze and iron must have weighed considerably more (I will assume that it was double). We are now looking at somewhere in the range of 100,000 pounds of metal per square foot of the temple. That is the equivalent weight of 40 full size cars per square foot. And we haven’t even gotten to the rock and timber, yet.
The gold and silver equates to a dollar value of $54 Billion today. Even given the inflated population figures of Israel that are recorded in the Bible, it still means that every man, woman, and child in the nation contributed almost $20,000, or 40 pounds of gold and silver. In all likelihood, the population of Israel was only about 1/10 of the Biblical figures, so the contribution per person would have been approximately 10 times higher. And, of course, we have not costed the iron, bronze, rock, timber, and labour. Not bad for a group of poor desert farmers.
http://www.jehovahs-witness.net/watchtower/bible/154236/2/The-Atheists-Book-of-Bible-Stories