Finding the Third Proportional to 1,344,278 and 2,129,628

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344,278 : 2,129,628 = 2,129,628 : x
2. Step 2: Convert to fraction form
   1,344,278/2,129,628 = 2,129,628/x
3. Step 3: Cross multiply
   1,344,278x = 2,129,628 × 2,129,628
4. Step 4: Simplify right side
   1,344,278x = 4,535,315,418,384
5. Step 5: Solve for x
   x = 4,535,315,418,384/1,344,278
6. Step 6: Final answer
   x = 3,373,792.79