Finding the Third Proportional to 2,215.13 and 3,279.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.13 : 3,279.75 = 3,279.75 : x
2. Step 2: Convert to fraction form
   2,215.13/3,279.75 = 3,279.75/x
3. Step 3: Cross multiply
   2,215.13x = 3,279.75 × 3,279.75
4. Step 4: Simplify right side
   2,215.13x = 10,756,760.06
5. Step 5: Solve for x
   x = 10,756,760.06/2,215.13
6. Step 6: Final answer
   x = 4,856.05