Finding the Third Proportional to 2,218,782 and 4,542,708

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218,782 : 4,542,708 = 4,542,708 : x
2. Step 2: Convert to fraction form
   2,218,782/4,542,708 = 4,542,708/x
3. Step 3: Cross multiply
   2,218,782x = 4,542,708 × 4,542,708
4. Step 4: Simplify right side
   2,218,782x = 20,636,195,973,264
5. Step 5: Solve for x
   x = 20,636,195,973,264/2,218,782
6. Step 6: Final answer
   x = 9,300,686.58