Finding the Third Proportional to 475,761 and 687,391.50

Step by Step Solution

1. Step 1: Write the proportion equation
   475,761 : 687,391.50 = 687,391.50 : x
2. Step 2: Convert to fraction form
   475,761/687,391.50 = 687,391.50/x
3. Step 3: Cross multiply
   475,761x = 687,391.50 × 687,391.50
4. Step 4: Simplify right side
   475,761x = 472,507,074,272.25
5. Step 5: Solve for x
   x = 472,507,074,272.25/475,761
6. Step 6: Final answer
   x = 993,160.59