Finding the Third Proportional to 81,640 and 124,892

Step by Step Solution

1. Step 1: Write the proportion equation
   81,640 : 124,892 = 124,892 : x
2. Step 2: Convert to fraction form
   81,640/124,892 = 124,892/x
3. Step 3: Cross multiply
   81,640x = 124,892 × 124,892
4. Step 4: Simplify right side
   81,640x = 15,598,011,664
5. Step 5: Solve for x
   x = 15,598,011,664/81,640
6. Step 6: Final answer
   x = 191,058.45