Finding the Third Proportional to 146,504 and 315,760

Step by Step Solution

1. Step 1: Write the proportion equation
   146,504 : 315,760 = 315,760 : x
2. Step 2: Convert to fraction form
   146,504/315,760 = 315,760/x
3. Step 3: Cross multiply
   146,504x = 315,760 × 315,760
4. Step 4: Simplify right side
   146,504x = 99,704,377,600
5. Step 5: Solve for x
   x = 99,704,377,600/146,504
6. Step 6: Final answer
   x = 680,557.37