Finding the Third Proportional to 300,864 and 660,779.25

Step by Step Solution

1. Step 1: Write the proportion equation
   300,864 : 660,779.25 = 660,779.25 : x
2. Step 2: Convert to fraction form
   300,864/660,779.25 = 660,779.25/x
3. Step 3: Cross multiply
   300,864x = 660,779.25 × 660,779.25
4. Step 4: Simplify right side
   300,864x = 436,629,217,230.56
5. Step 5: Solve for x
   x = 436,629,217,230.56/300,864
6. Step 6: Final answer
   x = 1,451,251.12