Finding the Third Proportional to 9,981 and 21,906

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981 : 21,906 = 21,906 : x
2. Step 2: Convert to fraction form
   9,981/21,906 = 21,906/x
3. Step 3: Cross multiply
   9,981x = 21,906 × 21,906
4. Step 4: Simplify right side
   9,981x = 479,872,836
5. Step 5: Solve for x
   x = 479,872,836/9,981
6. Step 6: Final answer
   x = 48,078.63