Finding the Third Proportional to 9,721,022 and 21,272,860

Step by Step Solution

1. Step 1: Write the proportion equation
   9,721,022 : 21,272,860 = 21,272,860 : x
2. Step 2: Convert to fraction form
   9,721,022/21,272,860 = 21,272,860/x
3. Step 3: Cross multiply
   9,721,022x = 21,272,860 × 21,272,860
4. Step 4: Simplify right side
   9,721,022x = 452,534,572,579,600
5. Step 5: Solve for x
   x = 452,534,572,579,600/9,721,022
6. Step 6: Final answer
   x = 46,552,160.11