Finding the Third Proportional to 10,111,981 and 21,840,055

Step by Step Solution

1. Step 1: Write the proportion equation
   10,111,981 : 21,840,055 = 21,840,055 : x
2. Step 2: Convert to fraction form
   10,111,981/21,840,055 = 21,840,055/x
3. Step 3: Cross multiply
   10,111,981x = 21,840,055 × 21,840,055
4. Step 4: Simplify right side
   10,111,981x = 476,988,002,403,025
5. Step 5: Solve for x
   x = 476,988,002,403,025/10,111,981
6. Step 6: Final answer
   x = 47,170,579.38