Finding the Third Proportional to 9,955,408 and 21,275,504

Step by Step Solution

1. Step 1: Write the proportion equation
   9,955,408 : 21,275,504 = 21,275,504 : x
2. Step 2: Convert to fraction form
   9,955,408/21,275,504 = 21,275,504/x
3. Step 3: Cross multiply
   9,955,408x = 21,275,504 × 21,275,504
4. Step 4: Simplify right side
   9,955,408x = 452,647,070,454,016
5. Step 5: Solve for x
   x = 452,647,070,454,016/9,955,408
6. Step 6: Final answer
   x = 45,467,455.52