Finding the Third Proportional to 20,110 and 42,422

Step by Step Solution

1. Step 1: Write the proportion equation
   20,110 : 42,422 = 42,422 : x
2. Step 2: Convert to fraction form
   20,110/42,422 = 42,422/x
3. Step 3: Cross multiply
   20,110x = 42,422 × 42,422
4. Step 4: Simplify right side
   20,110x = 1,799,626,084
5. Step 5: Solve for x
   x = 1,799,626,084/20,110
6. Step 6: Final answer
   x = 89,489.11