Finding the Third Proportional to 158,612 and 216,040

Step by Step Solution

1. Step 1: Write the proportion equation
   158,612 : 216,040 = 216,040 : x
2. Step 2: Convert to fraction form
   158,612/216,040 = 216,040/x
3. Step 3: Cross multiply
   158,612x = 216,040 × 216,040
4. Step 4: Simplify right side
   158,612x = 46,673,281,600
5. Step 5: Solve for x
   x = 46,673,281,600/158,612
6. Step 6: Final answer
   x = 294,260.72