Finding the Third Proportional to 506,931 and 708,727.50

Step by Step Solution

1. Step 1: Write the proportion equation
   506,931 : 708,727.50 = 708,727.50 : x
2. Step 2: Convert to fraction form
   506,931/708,727.50 = 708,727.50/x
3. Step 3: Cross multiply
   506,931x = 708,727.50 × 708,727.50
4. Step 4: Simplify right side
   506,931x = 502,294,669,256.25
5. Step 5: Solve for x
   x = 502,294,669,256.25/506,931
6. Step 6: Final answer
   x = 990,854.12