Finding the Third Proportional to 488,617.50 and 747,458

Step by Step Solution

1. Step 1: Write the proportion equation
   488,617.50 : 747,458 = 747,458 : x
2. Step 2: Convert to fraction form
   488,617.50/747,458 = 747,458/x
3. Step 3: Cross multiply
   488,617.50x = 747,458 × 747,458
4. Step 4: Simplify right side
   488,617.50x = 558,693,461,764
5. Step 5: Solve for x
   x = 558,693,461,764/488,617.50
6. Step 6: Final answer
   x = 1,143,416.81