Finding the Third Proportional to 2,175,399 and 4,665,618

Step by Step Solution

1. Step 1: Write the proportion equation
   2,175,399 : 4,665,618 = 4,665,618 : x
2. Step 2: Convert to fraction form
   2,175,399/4,665,618 = 4,665,618/x
3. Step 3: Cross multiply
   2,175,399x = 4,665,618 × 4,665,618
4. Step 4: Simplify right side
   2,175,399x = 21,767,991,321,924
5. Step 5: Solve for x
   x = 21,767,991,321,924/2,175,399
6. Step 6: Final answer
   x = 10,006,436.21