Finding the Third Proportional to 142,445.50 and 303,959

Step by Step Solution

1. Step 1: Write the proportion equation
   142,445.50 : 303,959 = 303,959 : x
2. Step 2: Convert to fraction form
   142,445.50/303,959 = 303,959/x
3. Step 3: Cross multiply
   142,445.50x = 303,959 × 303,959
4. Step 4: Simplify right side
   142,445.50x = 92,391,073,681
5. Step 5: Solve for x
   x = 92,391,073,681/142,445.50
6. Step 6: Final answer
   x = 648,606.48