Finding the Third Proportional to 392,730.50 and 604,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   392,730.50 : 604,404.50 = 604,404.50 : x
2. Step 2: Convert to fraction form
   392,730.50/604,404.50 = 604,404.50/x
3. Step 3: Cross multiply
   392,730.50x = 604,404.50 × 604,404.50
4. Step 4: Simplify right side
   392,730.50x = 365,304,799,620.25
5. Step 5: Solve for x
   x = 365,304,799,620.25/392,730.50
6. Step 6: Final answer
   x = 930,166.61