Finding the Third Proportional to 60,672 and 90,540

Step by Step Solution

1. Step 1: Write the proportion equation
   60,672 : 90,540 = 90,540 : x
2. Step 2: Convert to fraction form
   60,672/90,540 = 90,540/x
3. Step 3: Cross multiply
   60,672x = 90,540 × 90,540
4. Step 4: Simplify right side
   60,672x = 8,197,491,600
5. Step 5: Solve for x
   x = 8,197,491,600/60,672
6. Step 6: Final answer
   x = 135,111.61