Finding the Third Proportional to 840,618 and 1,257,956

Step by Step Solution

1. Step 1: Write the proportion equation
   840,618 : 1,257,956 = 1,257,956 : x
2. Step 2: Convert to fraction form
   840,618/1,257,956 = 1,257,956/x
3. Step 3: Cross multiply
   840,618x = 1,257,956 × 1,257,956
4. Step 4: Simplify right side
   840,618x = 1,582,453,297,936
5. Step 5: Solve for x
   x = 1,582,453,297,936/840,618
6. Step 6: Final answer
   x = 1,882,488.00