Finding the Third Proportional to 506,854.50 and 708,612

Step by Step Solution

1. Step 1: Write the proportion equation
   506,854.50 : 708,612 = 708,612 : x
2. Step 2: Convert to fraction form
   506,854.50/708,612 = 708,612/x
3. Step 3: Cross multiply
   506,854.50x = 708,612 × 708,612
4. Step 4: Simplify right side
   506,854.50x = 502,130,966,544
5. Step 5: Solve for x
   x = 502,130,966,544/506,854.50
6. Step 6: Final answer
   x = 990,680.69