Finding the Third Proportional to 39,396.38 and 57,408.75

Step by Step Solution

1. Step 1: Write the proportion equation
   39,396.38 : 57,408.75 = 57,408.75 : x
2. Step 2: Convert to fraction form
   39,396.38/57,408.75 = 57,408.75/x
3. Step 3: Cross multiply
   39,396.38x = 57,408.75 × 57,408.75
4. Step 4: Simplify right side
   39,396.38x = 3,295,764,576.56
5. Step 5: Solve for x
   x = 3,295,764,576.56/39,396.38
6. Step 6: Final answer
   x = 83,656.54