Finding the Third Proportional to 67,869 and 143,398

Step by Step Solution

1. Step 1: Write the proportion equation
   67,869 : 143,398 = 143,398 : x
2. Step 2: Convert to fraction form
   67,869/143,398 = 143,398/x
3. Step 3: Cross multiply
   67,869x = 143,398 × 143,398
4. Step 4: Simplify right side
   67,869x = 20,562,986,404
5. Step 5: Solve for x
   x = 20,562,986,404/67,869
6. Step 6: Final answer
   x = 302,980.54