Finding the Third Proportional to 475,434 and 647,540

Step by Step Solution

1. Step 1: Write the proportion equation
   475,434 : 647,540 = 647,540 : x
2. Step 2: Convert to fraction form
   475,434/647,540 = 647,540/x
3. Step 3: Cross multiply
   475,434x = 647,540 × 647,540
4. Step 4: Simplify right side
   475,434x = 419,308,051,600
5. Step 5: Solve for x
   x = 419,308,051,600/475,434
6. Step 6: Final answer
   x = 881,947.97