Finding the Third Proportional to 67,987 and 144,078

Step by Step Solution

1. Step 1: Write the proportion equation
   67,987 : 144,078 = 144,078 : x
2. Step 2: Convert to fraction form
   67,987/144,078 = 144,078/x
3. Step 3: Cross multiply
   67,987x = 144,078 × 144,078
4. Step 4: Simplify right side
   67,987x = 20,758,470,084
5. Step 5: Solve for x
   x = 20,758,470,084/67,987
6. Step 6: Final answer
   x = 305,329.99