Finding the Third Proportional to 67,089 and 143,574

Step by Step Solution

1. Step 1: Write the proportion equation
   67,089 : 143,574 = 143,574 : x
2. Step 2: Convert to fraction form
   67,089/143,574 = 143,574/x
3. Step 3: Cross multiply
   67,089x = 143,574 × 143,574
4. Step 4: Simplify right side
   67,089x = 20,613,493,476
5. Step 5: Solve for x
   x = 20,613,493,476/67,089
6. Step 6: Final answer
   x = 307,255.94