Finding the Third Proportional to 142,676 and 303,784

Step by Step Solution

1. Step 1: Write the proportion equation
   142,676 : 303,784 = 303,784 : x
2. Step 2: Convert to fraction form
   142,676/303,784 = 303,784/x
3. Step 3: Cross multiply
   142,676x = 303,784 × 303,784
4. Step 4: Simplify right side
   142,676x = 92,284,718,656
5. Step 5: Solve for x
   x = 92,284,718,656/142,676
6. Step 6: Final answer
   x = 646,813.19