Finding the Third Proportional to 25,311.75 and 55,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   25,311.75 : 55,390.50 = 55,390.50 : x
2. Step 2: Convert to fraction form
   25,311.75/55,390.50 = 55,390.50/x
3. Step 3: Cross multiply
   25,311.75x = 55,390.50 × 55,390.50
4. Step 4: Simplify right side
   25,311.75x = 3,068,107,490.25
5. Step 5: Solve for x
   x = 3,068,107,490.25/25,311.75
6. Step 6: Final answer
   x = 121,212.78