Finding the Third Proportional to 2,709 and 3,857.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,709 : 3,857.50 = 3,857.50 : x
2. Step 2: Convert to fraction form
   2,709/3,857.50 = 3,857.50/x
3. Step 3: Cross multiply
   2,709x = 3,857.50 × 3,857.50
4. Step 4: Simplify right side
   2,709x = 14,880,306.25
5. Step 5: Solve for x
   x = 14,880,306.25/2,709
6. Step 6: Final answer
   x = 5,492.91