Finding the Third Proportional to 9,078.38 and 12,501.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,078.38 : 12,501.38 = 12,501.38 : x
2. Step 2: Convert to fraction form
   9,078.38/12,501.38 = 12,501.38/x
3. Step 3: Cross multiply
   9,078.38x = 12,501.38 × 12,501.38
4. Step 4: Simplify right side
   9,078.38x = 156,284,376.89
5. Step 5: Solve for x
   x = 156,284,376.89/9,078.38
6. Step 6: Final answer
   x = 17,215.02