geometric mean

[misiaax3]

I don't understand how to do geometric means. I know the equation but then I'm lost. a over x = x over b.

 

[Loren]

a over x = x over b.
\(\displaystyle \frac{a}{x}=\frac{x}{b}\)
It is true, that if you have a true proportion, the product of the means equals the product of the extremes.