Finding the Third Proportional to 25,800 and 56,520.75

Step by Step Solution

1. Step 1: Write the proportion equation
   25,800 : 56,520.75 = 56,520.75 : x
2. Step 2: Convert to fraction form
   25,800/56,520.75 = 56,520.75/x
3. Step 3: Cross multiply
   25,800x = 56,520.75 × 56,520.75
4. Step 4: Simplify right side
   25,800x = 3,194,595,180.56
5. Step 5: Solve for x
   x = 3,194,595,180.56/25,800
6. Step 6: Final answer
   x = 123,821.52