Finding the Third Proportional to 666.50 and 956.38

Step by Step Solution

1. Step 1: Write the proportion equation
   666.50 : 956.38 = 956.38 : x
2. Step 2: Convert to fraction form
   666.50/956.38 = 956.38/x
3. Step 3: Cross multiply
   666.50x = 956.38 × 956.38
4. Step 4: Simplify right side
   666.50x = 914,653.14
5. Step 5: Solve for x
   x = 914,653.14/666.50
6. Step 6: Final answer
   x = 1,372.32