Finding the Third Proportional to 142,674 and 303,780

Step by Step Solution

1. Step 1: Write the proportion equation
   142,674 : 303,780 = 303,780 : x
2. Step 2: Convert to fraction form
   142,674/303,780 = 303,780/x
3. Step 3: Cross multiply
   142,674x = 303,780 × 303,780
4. Step 4: Simplify right side
   142,674x = 92,282,288,400
5. Step 5: Solve for x
   x = 92,282,288,400/142,674
6. Step 6: Final answer
   x = 646,805.22