Finding the Third Proportional to 67,074 and 144,438

Step by Step Solution

1. Step 1: Write the proportion equation
   67,074 : 144,438 = 144,438 : x
2. Step 2: Convert to fraction form
   67,074/144,438 = 144,438/x
3. Step 3: Cross multiply
   67,074x = 144,438 × 144,438
4. Step 4: Simplify right side
   67,074x = 20,862,335,844
5. Step 5: Solve for x
   x = 20,862,335,844/67,074
6. Step 6: Final answer
   x = 311,034.62