Finding the Third Proportional to 12,789.38 and 27,099.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,789.38 : 27,099.75 = 27,099.75 : x
2. Step 2: Convert to fraction form
   12,789.38/27,099.75 = 27,099.75/x
3. Step 3: Cross multiply
   12,789.38x = 27,099.75 × 27,099.75
4. Step 4: Simplify right side
   12,789.38x = 734,396,450.06
5. Step 5: Solve for x
   x = 734,396,450.06/12,789.38
6. Step 6: Final answer
   x = 57,422.39