Finding the Third Proportional to 500,618 and 1,036,720

Step by Step Solution

1. Step 1: Write the proportion equation
   500,618 : 1,036,720 = 1,036,720 : x
2. Step 2: Convert to fraction form
   500,618/1,036,720 = 1,036,720/x
3. Step 3: Cross multiply
   500,618x = 1,036,720 × 1,036,720
4. Step 4: Simplify right side
   500,618x = 1,074,788,358,400
5. Step 5: Solve for x
   x = 1,074,788,358,400/500,618
6. Step 6: Final answer
   x = 2,146,923.12