Finding the Third Proportional to 13,082.77 and 20,220.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,082.77 : 20,220.89 = 20,220.89 : x
2. Step 2: Convert to fraction form
   13,082.77/20,220.89 = 20,220.89/x
3. Step 3: Cross multiply
   13,082.77x = 20,220.89 × 20,220.89
4. Step 4: Simplify right side
   13,082.77x = 408,884,417.67
5. Step 5: Solve for x
   x = 408,884,417.67/13,082.77
6. Step 6: Final answer
   x = 31,253.67