Finding the Third Proportional to 554.06 and 738.56

Step by Step Solution

1. Step 1: Write the proportion equation
   554.06 : 738.56 = 738.56 : x
2. Step 2: Convert to fraction form
   554.06/738.56 = 738.56/x
3. Step 3: Cross multiply
   554.06x = 738.56 × 738.56
4. Step 4: Simplify right side
   554.06x = 545,474.57
5. Step 5: Solve for x
   x = 545,474.57/554.06
6. Step 6: Final answer
   x = 984.50