Finding the Third Proportional to 648.38 and 997.50

Step by Step Solution

1. Step 1: Write the proportion equation
   648.38 : 997.50 = 997.50 : x
2. Step 2: Convert to fraction form
   648.38/997.50 = 997.50/x
3. Step 3: Cross multiply
   648.38x = 997.50 × 997.50
4. Step 4: Simplify right side
   648.38x = 995,006.25
5. Step 5: Solve for x
   x = 995,006.25/648.38
6. Step 6: Final answer
   x = 1,534.62