Finding the Third Proportional to 81,742 and 124,990

Step by Step Solution

1. Step 1: Write the proportion equation
   81,742 : 124,990 = 124,990 : x
2. Step 2: Convert to fraction form
   81,742/124,990 = 124,990/x
3. Step 3: Cross multiply
   81,742x = 124,990 × 124,990
4. Step 4: Simplify right side
   81,742x = 15,622,500,100
5. Step 5: Solve for x
   x = 15,622,500,100/81,742
6. Step 6: Final answer
   x = 191,119.62