Finding the Third Proportional to 140,420 and 303,320

Step by Step Solution

1. Step 1: Write the proportion equation
   140,420 : 303,320 = 303,320 : x
2. Step 2: Convert to fraction form
   140,420/303,320 = 303,320/x
3. Step 3: Cross multiply
   140,420x = 303,320 × 303,320
4. Step 4: Simplify right side
   140,420x = 92,003,022,400
5. Step 5: Solve for x
   x = 92,003,022,400/140,420
6. Step 6: Final answer
   x = 655,198.85