Finding the Third Proportional to 602.50 and 1,399.25

Step by Step Solution

1. Step 1: Write the proportion equation
   602.50 : 1,399.25 = 1,399.25 : x
2. Step 2: Convert to fraction form
   602.50/1,399.25 = 1,399.25/x
3. Step 3: Cross multiply
   602.50x = 1,399.25 × 1,399.25
4. Step 4: Simplify right side
   602.50x = 1,957,900.56
5. Step 5: Solve for x
   x = 1,957,900.56/602.50
6. Step 6: Final answer
   x = 3,249.63