Finding the Third Proportional to 5,218,488 and 7,962,708

Step by Step Solution

1. Step 1: Write the proportion equation
   5,218,488 : 7,962,708 = 7,962,708 : x
2. Step 2: Convert to fraction form
   5,218,488/7,962,708 = 7,962,708/x
3. Step 3: Cross multiply
   5,218,488x = 7,962,708 × 7,962,708
4. Step 4: Simplify right side
   5,218,488x = 63,404,718,693,264
5. Step 5: Solve for x
   x = 63,404,718,693,264/5,218,488
6. Step 6: Final answer
   x = 12,150,017.15