Question

find the mean proportional between 8 and 18​

Answer 1

To find the mean proportional between 8 and 18, first multiply the two given numbers together, then find the square root out of their product. Then the answer will be the mean proportional between 8 and 18. So, 12 is the mean proportional between 8 and 18.

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Answer 2

Answer:

The mean proportional is 12

Step-by-step explanation:

Let mean proportional = b

Here, a=8 , c=18

$\frac{a}{b} = \frac{b}{c}$

∴ b² = ac

  b² = 8 x 18

  b² = 144

   b  = 12