Finding the Third Proportional to 366,939 and 516,731.06

Step by Step Solution

1. Step 1: Write the proportion equation
   366,939 : 516,731.06 = 516,731.06 : x
2. Step 2: Convert to fraction form
   366,939/516,731.06 = 516,731.06/x
3. Step 3: Cross multiply
   366,939x = 516,731.06 × 516,731.06
4. Step 4: Simplify right side
   366,939x = 267,010,990,952.38
5. Step 5: Solve for x
   x = 267,010,990,952.38/366,939
6. Step 6: Final answer
   x = 727,671.33