Finding the Third Proportional to 13,591.13 and 19,861.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,591.13 : 19,861.88 = 19,861.88 : x
2. Step 2: Convert to fraction form
   13,591.13/19,861.88 = 19,861.88/x
3. Step 3: Cross multiply
   13,591.13x = 19,861.88 × 19,861.88
4. Step 4: Simplify right side
   13,591.13x = 394,494,078.52
5. Step 5: Solve for x
   x = 394,494,078.52/13,591.13
6. Step 6: Final answer
   x = 29,025.86