Finding the Third Proportional to 60,570 and 140,760

Step by Step Solution

1. Step 1: Write the proportion equation
   60,570 : 140,760 = 140,760 : x
2. Step 2: Convert to fraction form
   60,570/140,760 = 140,760/x
3. Step 3: Cross multiply
   60,570x = 140,760 × 140,760
4. Step 4: Simplify right side
   60,570x = 19,813,377,600
5. Step 5: Solve for x
   x = 19,813,377,600/60,570
6. Step 6: Final answer
   x = 327,115.36