Finding the Third Proportional to 143,300 and 303,670

Step by Step Solution

1. Step 1: Write the proportion equation
   143,300 : 303,670 = 303,670 : x
2. Step 2: Convert to fraction form
   143,300/303,670 = 303,670/x
3. Step 3: Cross multiply
   143,300x = 303,670 × 303,670
4. Step 4: Simplify right side
   143,300x = 92,215,468,900
5. Step 5: Solve for x
   x = 92,215,468,900/143,300
6. Step 6: Final answer
   x = 643,513.39