Finding the Third Proportional to 23,120 and 54,560

Step by Step Solution

1. Step 1: Write the proportion equation
   23,120 : 54,560 = 54,560 : x
2. Step 2: Convert to fraction form
   23,120/54,560 = 54,560/x
3. Step 3: Cross multiply
   23,120x = 54,560 × 54,560
4. Step 4: Simplify right side
   23,120x = 2,976,793,600
5. Step 5: Solve for x
   x = 2,976,793,600/23,120
6. Step 6: Final answer
   x = 128,754.05