Finding the Third Proportional to 498,456 and 748,320

Step by Step Solution

1. Step 1: Write the proportion equation
   498,456 : 748,320 = 748,320 : x
2. Step 2: Convert to fraction form
   498,456/748,320 = 748,320/x
3. Step 3: Cross multiply
   498,456x = 748,320 × 748,320
4. Step 4: Simplify right side
   498,456x = 559,982,822,400
5. Step 5: Solve for x
   x = 559,982,822,400/498,456
6. Step 6: Final answer
   x = 1,123,434.81