Mean proportional
| (Math.) | the square root of their product. |
See also: Mean
Mean Proportional
mean proportional
[′mēn prə′pȯr·shən·əl]Mean Proportional
A mean proportional between two positive numbers is a number equal to the square root of their product. Thus, if a:x = x:b, then x is a mean proportional between a and b, and 
. The mean proportional x is also called the geometric mean of a and b.
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