Finding the Third Proportional to 1,144,991 and 1,555,009

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144,991 : 1,555,009 = 1,555,009 : x
2. Step 2: Convert to fraction form
   1,144,991/1,555,009 = 1,555,009/x
3. Step 3: Cross multiply
   1,144,991x = 1,555,009 × 1,555,009
4. Step 4: Simplify right side
   1,144,991x = 2,418,052,990,081
5. Step 5: Solve for x
   x = 2,418,052,990,081/1,144,991
6. Step 6: Final answer
   x = 2,111,853.27