#### Answer

The proportion is below.

#### Work Step by Step

Since they are similar triangles, corresponding sides are proportional. Thus:
$\frac{VT}{TS} = \frac{TS}{RT} \\ VT\cdot RT = TS \cdot TS$
Thus, we see that TS is the geometric mean.

Published by
Brooks Cole

ISBN 10:
1439047901

ISBN 13:
978-1-43904-790-3

The proportion is below.

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