Finding the Third Proportional to 3,871.25 and 5,715.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,871.25 : 5,715.25 = 5,715.25 : x
2. Step 2: Convert to fraction form
   3,871.25/5,715.25 = 5,715.25/x
3. Step 3: Cross multiply
   3,871.25x = 5,715.25 × 5,715.25
4. Step 4: Simplify right side
   3,871.25x = 32,664,082.56
5. Step 5: Solve for x
   x = 32,664,082.56/3,871.25
6. Step 6: Final answer
   x = 8,437.61