Finding the Third Proportional to 20,081 and 42,424

Step by Step Solution

1. Step 1: Write the proportion equation
   20,081 : 42,424 = 42,424 : x
2. Step 2: Convert to fraction form
   20,081/42,424 = 42,424/x
3. Step 3: Cross multiply
   20,081x = 42,424 × 42,424
4. Step 4: Simplify right side
   20,081x = 1,799,795,776
5. Step 5: Solve for x
   x = 1,799,795,776/20,081
6. Step 6: Final answer
   x = 89,626.80