Finding the Third Proportional to 25,879.50 and 55,991.25

Step by Step Solution

1. Step 1: Write the proportion equation
   25,879.50 : 55,991.25 = 55,991.25 : x
2. Step 2: Convert to fraction form
   25,879.50/55,991.25 = 55,991.25/x
3. Step 3: Cross multiply
   25,879.50x = 55,991.25 × 55,991.25
4. Step 4: Simplify right side
   25,879.50x = 3,135,020,076.56
5. Step 5: Solve for x
   x = 3,135,020,076.56/25,879.50
6. Step 6: Final answer
   x = 121,139.13