Finding the Third Proportional to 2,678 and 5,284

Step by Step Solution

1. Step 1: Write the proportion equation
   2,678 : 5,284 = 5,284 : x
2. Step 2: Convert to fraction form
   2,678/5,284 = 5,284/x
3. Step 3: Cross multiply
   2,678x = 5,284 × 5,284
4. Step 4: Simplify right side
   2,678x = 27,920,656
5. Step 5: Solve for x
   x = 27,920,656/2,678
6. Step 6: Final answer
   x = 10,425.94