Finding the Third Proportional to 142,448.50 and 303,965

Step by Step Solution

1. Step 1: Write the proportion equation
   142,448.50 : 303,965 = 303,965 : x
2. Step 2: Convert to fraction form
   142,448.50/303,965 = 303,965/x
3. Step 3: Cross multiply
   142,448.50x = 303,965 × 303,965
4. Step 4: Simplify right side
   142,448.50x = 92,394,721,225
5. Step 5: Solve for x
   x = 92,394,721,225/142,448.50
6. Step 6: Final answer
   x = 648,618.42