Finding the Third Proportional to 1,165,500 and 1,800,009

Step by Step Solution

1. Step 1: Write the proportion equation
   1,165,500 : 1,800,009 = 1,800,009 : x
2. Step 2: Convert to fraction form
   1,165,500/1,800,009 = 1,800,009/x
3. Step 3: Cross multiply
   1,165,500x = 1,800,009 × 1,800,009
4. Step 4: Simplify right side
   1,165,500x = 3,240,032,400,081
5. Step 5: Solve for x
   x = 3,240,032,400,081/1,165,500
6. Step 6: Final answer
   x = 2,779,950.58