Finding the Third Proportional to 285.50 and 448.25

Step by Step Solution

1. Step 1: Write the proportion equation
   285.50 : 448.25 = 448.25 : x
2. Step 2: Convert to fraction form
   285.50/448.25 = 448.25/x
3. Step 3: Cross multiply
   285.50x = 448.25 × 448.25
4. Step 4: Simplify right side
   285.50x = 200,928.06
5. Step 5: Solve for x
   x = 200,928.06/285.50
6. Step 6: Final answer
   x = 703.78