Finding the Third Proportional to 158,612 and 217,494

Step by Step Solution

1. Step 1: Write the proportion equation
   158,612 : 217,494 = 217,494 : x
2. Step 2: Convert to fraction form
   158,612/217,494 = 217,494/x
3. Step 3: Cross multiply
   158,612x = 217,494 × 217,494
4. Step 4: Simplify right side
   158,612x = 47,303,640,036
5. Step 5: Solve for x
   x = 47,303,640,036/158,612
6. Step 6: Final answer
   x = 298,234.94