Finding the Third Proportional to 13,220.72 and 28,423.41

Step by Step Solution

1. Step 1: Write the proportion equation
   13,220.72 : 28,423.41 = 28,423.41 : x
2. Step 2: Convert to fraction form
   13,220.72/28,423.41 = 28,423.41/x
3. Step 3: Cross multiply
   13,220.72x = 28,423.41 × 28,423.41
4. Step 4: Simplify right side
   13,220.72x = 807,890,022.85
5. Step 5: Solve for x
   x = 807,890,022.85/13,220.72
6. Step 6: Final answer
   x = 61,107.87