Finding the Third Proportional to 9,955,404 and 21,275,496

Step by Step Solution

1. Step 1: Write the proportion equation
   9,955,404 : 21,275,496 = 21,275,496 : x
2. Step 2: Convert to fraction form
   9,955,404/21,275,496 = 21,275,496/x
3. Step 3: Cross multiply
   9,955,404x = 21,275,496 × 21,275,496
4. Step 4: Simplify right side
   9,955,404x = 452,646,730,046,016
5. Step 5: Solve for x
   x = 452,646,730,046,016/9,955,404
6. Step 6: Final answer
   x = 45,467,439.60