Finding the Third Proportional to 143,285 and 298,198

Step by Step Solution

1. Step 1: Write the proportion equation
   143,285 : 298,198 = 298,198 : x
2. Step 2: Convert to fraction form
   143,285/298,198 = 298,198/x
3. Step 3: Cross multiply
   143,285x = 298,198 × 298,198
4. Step 4: Simplify right side
   143,285x = 88,922,047,204
5. Step 5: Solve for x
   x = 88,922,047,204/143,285
6. Step 6: Final answer
   x = 620,595.65