Finding the Third Proportional to 666.50 and 951.38

Step by Step Solution

1. Step 1: Write the proportion equation
   666.50 : 951.38 = 951.38 : x
2. Step 2: Convert to fraction form
   666.50/951.38 = 951.38/x
3. Step 3: Cross multiply
   666.50x = 951.38 × 951.38
4. Step 4: Simplify right side
   666.50x = 905,114.39
5. Step 5: Solve for x
   x = 905,114.39/666.50
6. Step 6: Final answer
   x = 1,358.01