Finding the Third Proportional to 156,712 and 329,552

Step by Step Solution

1. Step 1: Write the proportion equation
   156,712 : 329,552 = 329,552 : x
2. Step 2: Convert to fraction form
   156,712/329,552 = 329,552/x
3. Step 3: Cross multiply
   156,712x = 329,552 × 329,552
4. Step 4: Simplify right side
   156,712x = 108,604,520,704
5. Step 5: Solve for x
   x = 108,604,520,704/156,712
6. Step 6: Final answer
   x = 693,019.81