Finding the Third Proportional to 20,137 and 42,867

Step by Step Solution

1. Step 1: Write the proportion equation
   20,137 : 42,867 = 42,867 : x
2. Step 2: Convert to fraction form
   20,137/42,867 = 42,867/x
3. Step 3: Cross multiply
   20,137x = 42,867 × 42,867
4. Step 4: Simplify right side
   20,137x = 1,837,579,689
5. Step 5: Solve for x
   x = 1,837,579,689/20,137
6. Step 6: Final answer
   x = 91,253.90