Finding the Third Proportional to 9,887,443.88 and 21,660,021

Step by Step Solution

1. Step 1: Write the proportion equation
   9,887,443.88 : 21,660,021 = 21,660,021 : x
2. Step 2: Convert to fraction form
   9,887,443.88/21,660,021 = 21,660,021/x
3. Step 3: Cross multiply
   9,887,443.88x = 21,660,021 × 21,660,021
4. Step 4: Simplify right side
   9,887,443.88x = 469,156,509,720,441
5. Step 5: Solve for x
   x = 469,156,509,720,441/9,887,443.88
6. Step 6: Final answer
   x = 47,449,726.71