SOLUTION: I need to determine if this proportion is true or false: 3/6 = 6/x

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Question 48311: I need to determine if this proportion is true or false:
3/6 = 6/x
Answer by tutorcecilia(2144) About Me  (Show Source):
You can put this solution on YOUR website!
3/6 = 6/x
(3)(x) / (6)(6) [ Cross-multiply]
3x = 36 [Solve for "x"]
3x/3 = 36/3
x = 12
So, the equation is true when x=12.