Finding the Third Proportional to 2,619,288 and 3,938,678

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619,288 : 3,938,678 = 3,938,678 : x
2. Step 2: Convert to fraction form
   2,619,288/3,938,678 = 3,938,678/x
3. Step 3: Cross multiply
   2,619,288x = 3,938,678 × 3,938,678
4. Step 4: Simplify right side
   2,619,288x = 15,513,184,387,684
5. Step 5: Solve for x
   x = 15,513,184,387,684/2,619,288
6. Step 6: Final answer
   x = 5,922,672.26