Finding the Third Proportional to 20,657 and 30,540

Step by Step Solution

1. Step 1: Write the proportion equation
   20,657 : 30,540 = 30,540 : x
2. Step 2: Convert to fraction form
   20,657/30,540 = 30,540/x
3. Step 3: Cross multiply
   20,657x = 30,540 × 30,540
4. Step 4: Simplify right side
   20,657x = 932,691,600
5. Step 5: Solve for x
   x = 932,691,600/20,657
6. Step 6: Final answer
   x = 45,151.36