Finding the Third Proportional to 1,311,186 and 2,025,009

Step by Step Solution

1. Step 1: Write the proportion equation
   1,311,186 : 2,025,009 = 2,025,009 : x
2. Step 2: Convert to fraction form
   1,311,186/2,025,009 = 2,025,009/x
3. Step 3: Cross multiply
   1,311,186x = 2,025,009 × 2,025,009
4. Step 4: Simplify right side
   1,311,186x = 4,100,661,450,081
5. Step 5: Solve for x
   x = 4,100,661,450,081/1,311,186
6. Step 6: Final answer
   x = 3,127,444.50