Finding the Third Proportional to 105,100 and 124,540

Step by Step Solution

1. Step 1: Write the proportion equation
   105,100 : 124,540 = 124,540 : x
2. Step 2: Convert to fraction form
   105,100/124,540 = 124,540/x
3. Step 3: Cross multiply
   105,100x = 124,540 × 124,540
4. Step 4: Simplify right side
   105,100x = 15,510,211,600
5. Step 5: Solve for x
   x = 15,510,211,600/105,100
6. Step 6: Final answer
   x = 147,575.75