Finding the Third Proportional to 215,626 and 308,760

Step by Step Solution

1. Step 1: Write the proportion equation
   215,626 : 308,760 = 308,760 : x
2. Step 2: Convert to fraction form
   215,626/308,760 = 308,760/x
3. Step 3: Cross multiply
   215,626x = 308,760 × 308,760
4. Step 4: Simplify right side
   215,626x = 95,332,737,600
5. Step 5: Solve for x
   x = 95,332,737,600/215,626
6. Step 6: Final answer
   x = 442,120.79