Finding the Third Proportional to 303,822 and 654,336

Step by Step Solution

1. Step 1: Write the proportion equation
   303,822 : 654,336 = 654,336 : x
2. Step 2: Convert to fraction form
   303,822/654,336 = 654,336/x
3. Step 3: Cross multiply
   303,822x = 654,336 × 654,336
4. Step 4: Simplify right side
   303,822x = 428,155,600,896
5. Step 5: Solve for x
   x = 428,155,600,896/303,822
6. Step 6: Final answer
   x = 1,409,231.72