Finding the Third Proportional to 1,139,546 and 2,431,618

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,546 : 2,431,618 = 2,431,618 : x
2. Step 2: Convert to fraction form
   1,139,546/2,431,618 = 2,431,618/x
3. Step 3: Cross multiply
   1,139,546x = 2,431,618 × 2,431,618
4. Step 4: Simplify right side
   1,139,546x = 5,912,766,097,924
5. Step 5: Solve for x
   x = 5,912,766,097,924/1,139,546
6. Step 6: Final answer
   x = 5,188,703.31