Finding the Third Proportional to 67,628 and 144,637

Step by Step Solution

1. Step 1: Write the proportion equation
   67,628 : 144,637 = 144,637 : x
2. Step 2: Convert to fraction form
   67,628/144,637 = 144,637/x
3. Step 3: Cross multiply
   67,628x = 144,637 × 144,637
4. Step 4: Simplify right side
   67,628x = 20,919,861,769
5. Step 5: Solve for x
   x = 20,919,861,769/67,628
6. Step 6: Final answer
   x = 309,337.28