Finding the Third Proportional to 81,728.25 and 112,548

Step by Step Solution

1. Step 1: Write the proportion equation
   81,728.25 : 112,548 = 112,548 : x
2. Step 2: Convert to fraction form
   81,728.25/112,548 = 112,548/x
3. Step 3: Cross multiply
   81,728.25x = 112,548 × 112,548
4. Step 4: Simplify right side
   81,728.25x = 12,667,052,304
5. Step 5: Solve for x
   x = 12,667,052,304/81,728.25
6. Step 6: Final answer
   x = 154,989.89