Finding the Third Proportional to 142,424.50 and 303,911

Step by Step Solution

1. Step 1: Write the proportion equation
   142,424.50 : 303,911 = 303,911 : x
2. Step 2: Convert to fraction form
   142,424.50/303,911 = 303,911/x
3. Step 3: Cross multiply
   142,424.50x = 303,911 × 303,911
4. Step 4: Simplify right side
   142,424.50x = 92,361,895,921
5. Step 5: Solve for x
   x = 92,361,895,921/142,424.50
6. Step 6: Final answer
   x = 648,497.25