Finding the Third Proportional to 12,866,448 and 28,291,686

Step by Step Solution

1. Step 1: Write the proportion equation
   12,866,448 : 28,291,686 = 28,291,686 : x
2. Step 2: Convert to fraction form
   12,866,448/28,291,686 = 28,291,686/x
3. Step 3: Cross multiply
   12,866,448x = 28,291,686 × 28,291,686
4. Step 4: Simplify right side
   12,866,448x = 800,419,496,722,596
5. Step 5: Solve for x
   x = 800,419,496,722,596/12,866,448
6. Step 6: Final answer
   x = 62,209,826.42