Finding the Third Proportional to 2,639.25 and 5,667.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639.25 : 5,667.75 = 5,667.75 : x
2. Step 2: Convert to fraction form
   2,639.25/5,667.75 = 5,667.75/x
3. Step 3: Cross multiply
   2,639.25x = 5,667.75 × 5,667.75
4. Step 4: Simplify right side
   2,639.25x = 32,123,390.06
5. Step 5: Solve for x
   x = 32,123,390.06/2,639.25
6. Step 6: Final answer
   x = 12,171.41