Finding the Third Proportional to 13,225.78 and 20,257.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,225.78 : 20,257.59 = 20,257.59 : x
2. Step 2: Convert to fraction form
   13,225.78/20,257.59 = 20,257.59/x
3. Step 3: Cross multiply
   13,225.78x = 20,257.59 × 20,257.59
4. Step 4: Simplify right side
   13,225.78x = 410,370,104.54
5. Step 5: Solve for x
   x = 410,370,104.54/13,225.78
6. Step 6: Final answer
   x = 31,028.04