Finding the Third Proportional to 2,686 and 5,784

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686 : 5,784 = 5,784 : x
2. Step 2: Convert to fraction form
   2,686/5,784 = 5,784/x
3. Step 3: Cross multiply
   2,686x = 5,784 × 5,784
4. Step 4: Simplify right side
   2,686x = 33,454,656
5. Step 5: Solve for x
   x = 33,454,656/2,686
6. Step 6: Final answer
   x = 12,455.20