Finding the Third Proportional to 2,406 and 3,517.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,406 : 3,517.50 = 3,517.50 : x
2. Step 2: Convert to fraction form
   2,406/3,517.50 = 3,517.50/x
3. Step 3: Cross multiply
   2,406x = 3,517.50 × 3,517.50
4. Step 4: Simplify right side
   2,406x = 12,372,806.25
5. Step 5: Solve for x
   x = 12,372,806.25/2,406
6. Step 6: Final answer
   x = 5,142.48