Finding the Third Proportional to 2,200.50 and 3,408.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,200.50 : 3,408.75 = 3,408.75 : x
2. Step 2: Convert to fraction form
   2,200.50/3,408.75 = 3,408.75/x
3. Step 3: Cross multiply
   2,200.50x = 3,408.75 × 3,408.75
4. Step 4: Simplify right side
   2,200.50x = 11,619,576.56
5. Step 5: Solve for x
   x = 11,619,576.56/2,200.50
6. Step 6: Final answer
   x = 5,280.43