Finding the Third Proportional to 60,078 and 86,540

Step by Step Solution

1. Step 1: Write the proportion equation
   60,078 : 86,540 = 86,540 : x
2. Step 2: Convert to fraction form
   60,078/86,540 = 86,540/x
3. Step 3: Cross multiply
   60,078x = 86,540 × 86,540
4. Step 4: Simplify right side
   60,078x = 7,489,171,600
5. Step 5: Solve for x
   x = 7,489,171,600/60,078
6. Step 6: Final answer
   x = 124,657.47