Finding the Third Proportional to 475,440 and 647,550

Step by Step Solution

1. Step 1: Write the proportion equation
   475,440 : 647,550 = 647,550 : x
2. Step 2: Convert to fraction form
   475,440/647,550 = 647,550/x
3. Step 3: Cross multiply
   475,440x = 647,550 × 647,550
4. Step 4: Simplify right side
   475,440x = 419,321,002,500
5. Step 5: Solve for x
   x = 419,321,002,500/475,440
6. Step 6: Final answer
   x = 881,964.08