Finding the Third Proportional to 903.38 and 1,399.50

Step by Step Solution

1. Step 1: Write the proportion equation
   903.38 : 1,399.50 = 1,399.50 : x
2. Step 2: Convert to fraction form
   903.38/1,399.50 = 1,399.50/x
3. Step 3: Cross multiply
   903.38x = 1,399.50 × 1,399.50
4. Step 4: Simplify right side
   903.38x = 1,958,600.25
5. Step 5: Solve for x
   x = 1,958,600.25/903.38
6. Step 6: Final answer
   x = 2,168.09