Finding the Third Proportional to 298.83 and 403.45

Step by Step Solution

1. Step 1: Write the proportion equation
   298.83 : 403.45 = 403.45 : x
2. Step 2: Convert to fraction form
   298.83/403.45 = 403.45/x
3. Step 3: Cross multiply
   298.83x = 403.45 × 403.45
4. Step 4: Simplify right side
   298.83x = 162,774.42
5. Step 5: Solve for x
   x = 162,774.42/298.83
6. Step 6: Final answer
   x = 544.71