Finding the Third Proportional to 143,982 and 299,020

Step by Step Solution

1. Step 1: Write the proportion equation
   143,982 : 299,020 = 299,020 : x
2. Step 2: Convert to fraction form
   143,982/299,020 = 299,020/x
3. Step 3: Cross multiply
   143,982x = 299,020 × 299,020
4. Step 4: Simplify right side
   143,982x = 89,412,960,400
5. Step 5: Solve for x
   x = 89,412,960,400/143,982
6. Step 6: Final answer
   x = 621,000.96