Finding the Third Proportional to 11,259 and 25,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,259 : 25,429.50 = 25,429.50 : x
2. Step 2: Convert to fraction form
   11,259/25,429.50 = 25,429.50/x
3. Step 3: Cross multiply
   11,259x = 25,429.50 × 25,429.50
4. Step 4: Simplify right side
   11,259x = 646,659,470.25
5. Step 5: Solve for x
   x = 646,659,470.25/11,259
6. Step 6: Final answer
   x = 57,434.89