Finding the Third Proportional to 2,720 and 5,516

Step by Step Solution

1. Step 1: Write the proportion equation
   2,720 : 5,516 = 5,516 : x
2. Step 2: Convert to fraction form
   2,720/5,516 = 5,516/x
3. Step 3: Cross multiply
   2,720x = 5,516 × 5,516
4. Step 4: Simplify right side
   2,720x = 30,426,256
5. Step 5: Solve for x
   x = 30,426,256/2,720
6. Step 6: Final answer
   x = 11,186.12