Finding the Third Proportional to 1,216,717 and 2,816,618

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,717 : 2,816,618 = 2,816,618 : x
2. Step 2: Convert to fraction form
   1,216,717/2,816,618 = 2,816,618/x
3. Step 3: Cross multiply
   1,216,717x = 2,816,618 × 2,816,618
4. Step 4: Simplify right side
   1,216,717x = 7,933,336,957,924
5. Step 5: Solve for x
   x = 7,933,336,957,924/1,216,717
6. Step 6: Final answer
   x = 6,520,281.18