Finding the Third Proportional to 472,788 and 717,925.50

Step by Step Solution

1. Step 1: Write the proportion equation
   472,788 : 717,925.50 = 717,925.50 : x
2. Step 2: Convert to fraction form
   472,788/717,925.50 = 717,925.50/x
3. Step 3: Cross multiply
   472,788x = 717,925.50 × 717,925.50
4. Step 4: Simplify right side
   472,788x = 515,417,023,550.25
5. Step 5: Solve for x
   x = 515,417,023,550.25/472,788
6. Step 6: Final answer
   x = 1,090,165.20