Finding the Third Proportional to 300,841.50 and 660,724.50

Step by Step Solution

1. Step 1: Write the proportion equation
   300,841.50 : 660,724.50 = 660,724.50 : x
2. Step 2: Convert to fraction form
   300,841.50/660,724.50 = 660,724.50/x
3. Step 3: Cross multiply
   300,841.50x = 660,724.50 × 660,724.50
4. Step 4: Simplify right side
   300,841.50x = 436,556,864,900.25
5. Step 5: Solve for x
   x = 436,556,864,900.25/300,841.50
6. Step 6: Final answer
   x = 1,451,119.16