Finding the Third Proportional to 143,456 and 303,976

Step by Step Solution

1. Step 1: Write the proportion equation
   143,456 : 303,976 = 303,976 : x
2. Step 2: Convert to fraction form
   143,456/303,976 = 303,976/x
3. Step 3: Cross multiply
   143,456x = 303,976 × 303,976
4. Step 4: Simplify right side
   143,456x = 92,401,408,576
5. Step 5: Solve for x
   x = 92,401,408,576/143,456
6. Step 6: Final answer
   x = 644,109.75