Finding the Third Proportional to 477.50 and 734.50

Step by Step Solution

1. Step 1: Write the proportion equation
   477.50 : 734.50 = 734.50 : x
2. Step 2: Convert to fraction form
   477.50/734.50 = 734.50/x
3. Step 3: Cross multiply
   477.50x = 734.50 × 734.50
4. Step 4: Simplify right side
   477.50x = 539,490.25
5. Step 5: Solve for x
   x = 539,490.25/477.50
6. Step 6: Final answer
   x = 1,129.82