Finding the Third Proportional to 488.81 and 545.06

Step by Step Solution

1. Step 1: Write the proportion equation
   488.81 : 545.06 = 545.06 : x
2. Step 2: Convert to fraction form
   488.81/545.06 = 545.06/x
3. Step 3: Cross multiply
   488.81x = 545.06 × 545.06
4. Step 4: Simplify right side
   488.81x = 297,093.13
5. Step 5: Solve for x
   x = 297,093.13/488.81
6. Step 6: Final answer
   x = 607.79