Finding the Third Proportional to 2,217.75 and 3,479.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.75 : 3,479.25 = 3,479.25 : x
2. Step 2: Convert to fraction form
   2,217.75/3,479.25 = 3,479.25/x
3. Step 3: Cross multiply
   2,217.75x = 3,479.25 × 3,479.25
4. Step 4: Simplify right side
   2,217.75x = 12,105,180.56
5. Step 5: Solve for x
   x = 12,105,180.56/2,217.75
6. Step 6: Final answer
   x = 5,458.32