Finding the Third Proportional to 67,629.94 and 144,640.69

Step by Step Solution

1. Step 1: Write the proportion equation
   67,629.94 : 144,640.69 = 144,640.69 : x
2. Step 2: Convert to fraction form
   67,629.94/144,640.69 = 144,640.69/x
3. Step 3: Cross multiply
   67,629.94x = 144,640.69 × 144,640.69
4. Step 4: Simplify right side
   67,629.94x = 20,920,928,480.47
5. Step 5: Solve for x
   x = 20,920,928,480.47/67,629.94
6. Step 6: Final answer
   x = 309,344.19