Finding the Third Proportional to 4,486,656 and 9,870,468

Step by Step Solution

1. Step 1: Write the proportion equation
   4,486,656 : 9,870,468 = 9,870,468 : x
2. Step 2: Convert to fraction form
   4,486,656/9,870,468 = 9,870,468/x
3. Step 3: Cross multiply
   4,486,656x = 9,870,468 × 9,870,468
4. Step 4: Simplify right side
   4,486,656x = 97,426,138,539,024
5. Step 5: Solve for x
   x = 97,426,138,539,024/4,486,656
6. Step 6: Final answer
   x = 21,714,644.17