Finding the Third Proportional to 1,400,448 and 2,172,608

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400,448 : 2,172,608 = 2,172,608 : x
2. Step 2: Convert to fraction form
   1,400,448/2,172,608 = 2,172,608/x
3. Step 3: Cross multiply
   1,400,448x = 2,172,608 × 2,172,608
4. Step 4: Simplify right side
   1,400,448x = 4,720,225,521,664
5. Step 5: Solve for x
   x = 4,720,225,521,664/1,400,448
6. Step 6: Final answer
   x = 3,370,511.09