Finding the Third Proportional to 1,407,240 and 2,181,828

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407,240 : 2,181,828 = 2,181,828 : x
2. Step 2: Convert to fraction form
   1,407,240/2,181,828 = 2,181,828/x
3. Step 3: Cross multiply
   1,407,240x = 2,181,828 × 2,181,828
4. Step 4: Simplify right side
   1,407,240x = 4,760,373,421,584
5. Step 5: Solve for x
   x = 4,760,373,421,584/1,407,240
6. Step 6: Final answer
   x = 3,382,772.96