Finding the Third Proportional to 475,431 and 647,536.50

Step by Step Solution

1. Step 1: Write the proportion equation
   475,431 : 647,536.50 = 647,536.50 : x
2. Step 2: Convert to fraction form
   475,431/647,536.50 = 647,536.50/x
3. Step 3: Cross multiply
   475,431x = 647,536.50 × 647,536.50
4. Step 4: Simplify right side
   475,431x = 419,303,518,832.25
5. Step 5: Solve for x
   x = 419,303,518,832.25/475,431
6. Step 6: Final answer
   x = 881,944.00