Finding the Third Proportional to 68,040 and 144,180

Step by Step Solution

1. Step 1: Write the proportion equation
   68,040 : 144,180 = 144,180 : x
2. Step 2: Convert to fraction form
   68,040/144,180 = 144,180/x
3. Step 3: Cross multiply
   68,040x = 144,180 × 144,180
4. Step 4: Simplify right side
   68,040x = 20,787,872,400
5. Step 5: Solve for x
   x = 20,787,872,400/68,040
6. Step 6: Final answer
   x = 305,524.29