Finding the Third Proportional to 2,602,638 and 3,888,648

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602,638 : 3,888,648 = 3,888,648 : x
2. Step 2: Convert to fraction form
   2,602,638/3,888,648 = 3,888,648/x
3. Step 3: Cross multiply
   2,602,638x = 3,888,648 × 3,888,648
4. Step 4: Simplify right side
   2,602,638x = 15,121,583,267,904
5. Step 5: Solve for x
   x = 15,121,583,267,904/2,602,638
6. Step 6: Final answer
   x = 5,810,098.55