Finding the Third Proportional to 2,311 and 5,216

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311 : 5,216 = 5,216 : x
2. Step 2: Convert to fraction form
   2,311/5,216 = 5,216/x
3. Step 3: Cross multiply
   2,311x = 5,216 × 5,216
4. Step 4: Simplify right side
   2,311x = 27,206,656
5. Step 5: Solve for x
   x = 27,206,656/2,311
6. Step 6: Final answer
   x = 11,772.68