Finding the Third Proportional to 67,878 and 143,293

Step by Step Solution

1. Step 1: Write the proportion equation
   67,878 : 143,293 = 143,293 : x
2. Step 2: Convert to fraction form
   67,878/143,293 = 143,293/x
3. Step 3: Cross multiply
   67,878x = 143,293 × 143,293
4. Step 4: Simplify right side
   67,878x = 20,532,883,849
5. Step 5: Solve for x
   x = 20,532,883,849/67,878
6. Step 6: Final answer
   x = 302,496.89