Finding the Third Proportional to 2,555,366 and 5,587,660

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555,366 : 5,587,660 = 5,587,660 : x
2. Step 2: Convert to fraction form
   2,555,366/5,587,660 = 5,587,660/x
3. Step 3: Cross multiply
   2,555,366x = 5,587,660 × 5,587,660
4. Step 4: Simplify right side
   2,555,366x = 31,221,944,275,600
5. Step 5: Solve for x
   x = 31,221,944,275,600/2,555,366
6. Step 6: Final answer
   x = 12,218,188.81