Finding the Third Proportional to 40,138 and 57,048

Step by Step Solution

1. Step 1: Write the proportion equation
   40,138 : 57,048 = 57,048 : x
2. Step 2: Convert to fraction form
   40,138/57,048 = 57,048/x
3. Step 3: Cross multiply
   40,138x = 57,048 × 57,048
4. Step 4: Simplify right side
   40,138x = 3,254,474,304
5. Step 5: Solve for x
   x = 3,254,474,304/40,138
6. Step 6: Final answer
   x = 81,082.12