Finding the Third Proportional to 477,434 and 648,792

Step by Step Solution

1. Step 1: Write the proportion equation
   477,434 : 648,792 = 648,792 : x
2. Step 2: Convert to fraction form
   477,434/648,792 = 648,792/x
3. Step 3: Cross multiply
   477,434x = 648,792 × 648,792
4. Step 4: Simplify right side
   477,434x = 420,931,059,264
5. Step 5: Solve for x
   x = 420,931,059,264/477,434
6. Step 6: Final answer
   x = 881,652.88