Finding the Third Proportional to 9,129.38 and 13,449.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,129.38 : 13,449.38 = 13,449.38 : x
2. Step 2: Convert to fraction form
   9,129.38/13,449.38 = 13,449.38/x
3. Step 3: Cross multiply
   9,129.38x = 13,449.38 × 13,449.38
4. Step 4: Simplify right side
   9,129.38x = 180,885,687.89
5. Step 5: Solve for x
   x = 180,885,687.89/9,129.38
6. Step 6: Final answer
   x = 19,813.59