Finding the Third Proportional to 2,258.25 and 5,440.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.25 : 5,440.25 = 5,440.25 : x
2. Step 2: Convert to fraction form
   2,258.25/5,440.25 = 5,440.25/x
3. Step 3: Cross multiply
   2,258.25x = 5,440.25 × 5,440.25
4. Step 4: Simplify right side
   2,258.25x = 29,596,320.06
5. Step 5: Solve for x
   x = 29,596,320.06/2,258.25
6. Step 6: Final answer
   x = 13,105.87