Finding the Third Proportional to 124,540 and 196,891

Step by Step Solution

1. Step 1: Write the proportion equation
   124,540 : 196,891 = 196,891 : x
2. Step 2: Convert to fraction form
   124,540/196,891 = 196,891/x
3. Step 3: Cross multiply
   124,540x = 196,891 × 196,891
4. Step 4: Simplify right side
   124,540x = 38,766,065,881
5. Step 5: Solve for x
   x = 38,766,065,881/124,540
6. Step 6: Final answer
   x = 311,274.02