Finding the Third Proportional to 140,496 and 300,744

Step by Step Solution

1. Step 1: Write the proportion equation
   140,496 : 300,744 = 300,744 : x
2. Step 2: Convert to fraction form
   140,496/300,744 = 300,744/x
3. Step 3: Cross multiply
   140,496x = 300,744 × 300,744
4. Step 4: Simplify right side
   140,496x = 90,446,953,536
5. Step 5: Solve for x
   x = 90,446,953,536/140,496
6. Step 6: Final answer
   x = 643,768.89