Finding the Third Proportional to 313.59 and 448.03

Step by Step Solution

1. Step 1: Write the proportion equation
   313.59 : 448.03 = 448.03 : x
2. Step 2: Convert to fraction form
   313.59/448.03 = 448.03/x
3. Step 3: Cross multiply
   313.59x = 448.03 × 448.03
4. Step 4: Simplify right side
   313.59x = 200,732.00
5. Step 5: Solve for x
   x = 200,732.00/313.59
6. Step 6: Final answer
   x = 640.10