Finding the Third Proportional to 57,408.75 and 65,761.88

Step by Step Solution

1. Step 1: Write the proportion equation
   57,408.75 : 65,761.88 = 65,761.88 : x
2. Step 2: Convert to fraction form
   57,408.75/65,761.88 = 65,761.88/x
3. Step 3: Cross multiply
   57,408.75x = 65,761.88 × 65,761.88
4. Step 4: Simplify right side
   57,408.75x = 4,324,624,203.52
5. Step 5: Solve for x
   x = 4,324,624,203.52/57,408.75
6. Step 6: Final answer
   x = 75,330.40