Finding the Third Proportional to 1,139,698 and 2,431,939

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,698 : 2,431,939 = 2,431,939 : x
2. Step 2: Convert to fraction form
   1,139,698/2,431,939 = 2,431,939/x
3. Step 3: Cross multiply
   1,139,698x = 2,431,939 × 2,431,939
4. Step 4: Simplify right side
   1,139,698x = 5,914,327,299,721
5. Step 5: Solve for x
   x = 5,914,327,299,721/1,139,698
6. Step 6: Final answer
   x = 5,189,381.13