Finding the Third Proportional to 13,885.50 and 30,540

Step by Step Solution

1. Step 1: Write the proportion equation
   13,885.50 : 30,540 = 30,540 : x
2. Step 2: Convert to fraction form
   13,885.50/30,540 = 30,540/x
3. Step 3: Cross multiply
   13,885.50x = 30,540 × 30,540
4. Step 4: Simplify right side
   13,885.50x = 932,691,600
5. Step 5: Solve for x
   x = 932,691,600/13,885.50
6. Step 6: Final answer
   x = 67,170.18