Finding the Third Proportional to 392,704 and 604,499

Step by Step Solution

1. Step 1: Write the proportion equation
   392,704 : 604,499 = 604,499 : x
2. Step 2: Convert to fraction form
   392,704/604,499 = 604,499/x
3. Step 3: Cross multiply
   392,704x = 604,499 × 604,499
4. Step 4: Simplify right side
   392,704x = 365,419,041,001
5. Step 5: Solve for x
   x = 365,419,041,001/392,704
6. Step 6: Final answer
   x = 930,520.29