Finding the Third Proportional to 300,828 and 451,308

Step by Step Solution

1. Step 1: Write the proportion equation
   300,828 : 451,308 = 451,308 : x
2. Step 2: Convert to fraction form
   300,828/451,308 = 451,308/x
3. Step 3: Cross multiply
   300,828x = 451,308 × 451,308
4. Step 4: Simplify right side
   300,828x = 203,678,910,864
5. Step 5: Solve for x
   x = 203,678,910,864/300,828
6. Step 6: Final answer
   x = 677,061.01