Finding the Third Proportional to 142,447.50 and 303,963

Step by Step Solution

1. Step 1: Write the proportion equation
   142,447.50 : 303,963 = 303,963 : x
2. Step 2: Convert to fraction form
   142,447.50/303,963 = 303,963/x
3. Step 3: Cross multiply
   142,447.50x = 303,963 × 303,963
4. Step 4: Simplify right side
   142,447.50x = 92,393,505,369
5. Step 5: Solve for x
   x = 92,393,505,369/142,447.50
6. Step 6: Final answer
   x = 648,614.44