Finding the Third Proportional to 1,139,558 and 2,431,642

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,558 : 2,431,642 = 2,431,642 : x
2. Step 2: Convert to fraction form
   1,139,558/2,431,642 = 2,431,642/x
3. Step 3: Cross multiply
   1,139,558x = 2,431,642 × 2,431,642
4. Step 4: Simplify right side
   1,139,558x = 5,912,882,816,164
5. Step 5: Solve for x
   x = 5,912,882,816,164/1,139,558
6. Step 6: Final answer
   x = 5,188,751.09