Finding the Third Proportional to 9,120.09 and 13,745.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,120.09 : 13,745.95 = 13,745.95 : x
2. Step 2: Convert to fraction form
   9,120.09/13,745.95 = 13,745.95/x
3. Step 3: Cross multiply
   9,120.09x = 13,745.95 × 13,745.95
4. Step 4: Simplify right side
   9,120.09x = 188,951,227.31
5. Step 5: Solve for x
   x = 188,951,227.31/9,120.09
6. Step 6: Final answer
   x = 20,718.12