Finding the Third Proportional to 300,849 and 660,739.50

Step by Step Solution

1. Step 1: Write the proportion equation
   300,849 : 660,739.50 = 660,739.50 : x
2. Step 2: Convert to fraction form
   300,849/660,739.50 = 660,739.50/x
3. Step 3: Cross multiply
   300,849x = 660,739.50 × 660,739.50
4. Step 4: Simplify right side
   300,849x = 436,576,686,860.25
5. Step 5: Solve for x
   x = 436,576,686,860.25/300,849
6. Step 6: Final answer
   x = 1,451,148.87