Finding the Third Proportional to 2,688 and 4,384

Step by Step Solution

1. Step 1: Write the proportion equation
   2,688 : 4,384 = 4,384 : x
2. Step 2: Convert to fraction form
   2,688/4,384 = 4,384/x
3. Step 3: Cross multiply
   2,688x = 4,384 × 4,384
4. Step 4: Simplify right side
   2,688x = 19,219,456
5. Step 5: Solve for x
   x = 19,219,456/2,688
6. Step 6: Final answer
   x = 7,150.10