Finding the Third Proportional to 78,942 and 124,988

Step by Step Solution

1. Step 1: Write the proportion equation
   78,942 : 124,988 = 124,988 : x
2. Step 2: Convert to fraction form
   78,942/124,988 = 124,988/x
3. Step 3: Cross multiply
   78,942x = 124,988 × 124,988
4. Step 4: Simplify right side
   78,942x = 15,622,000,144
5. Step 5: Solve for x
   x = 15,622,000,144/78,942
6. Step 6: Final answer
   x = 197,892.13