Finding the Third Proportional to 20,137 and 42,874

Step by Step Solution

1. Step 1: Write the proportion equation
   20,137 : 42,874 = 42,874 : x
2. Step 2: Convert to fraction form
   20,137/42,874 = 42,874/x
3. Step 3: Cross multiply
   20,137x = 42,874 × 42,874
4. Step 4: Simplify right side
   20,137x = 1,838,179,876
5. Step 5: Solve for x
   x = 1,838,179,876/20,137
6. Step 6: Final answer
   x = 91,283.70