Finding the Third Proportional to 300,866 and 660,784

Step by Step Solution

1. Step 1: Write the proportion equation
   300,866 : 660,784 = 660,784 : x
2. Step 2: Convert to fraction form
   300,866/660,784 = 660,784/x
3. Step 3: Cross multiply
   300,866x = 660,784 × 660,784
4. Step 4: Simplify right side
   300,866x = 436,635,494,656
5. Step 5: Solve for x
   x = 436,635,494,656/300,866
6. Step 6: Final answer
   x = 1,451,262.34