Finding the Third Proportional to 300,716 and 654,366

Step by Step Solution

1. Step 1: Write the proportion equation
   300,716 : 654,366 = 654,366 : x
2. Step 2: Convert to fraction form
   300,716/654,366 = 654,366/x
3. Step 3: Cross multiply
   300,716x = 654,366 × 654,366
4. Step 4: Simplify right side
   300,716x = 428,194,861,956
5. Step 5: Solve for x
   x = 428,194,861,956/300,716
6. Step 6: Final answer
   x = 1,423,917.79