Finding the Third Proportional to 1,242,864 and 1,863,648

Step by Step Solution

1. Step 1: Write the proportion equation
   1,242,864 : 1,863,648 = 1,863,648 : x
2. Step 2: Convert to fraction form
   1,242,864/1,863,648 = 1,863,648/x
3. Step 3: Cross multiply
   1,242,864x = 1,863,648 × 1,863,648
4. Step 4: Simplify right side
   1,242,864x = 3,473,183,867,904
5. Step 5: Solve for x
   x = 3,473,183,867,904/1,242,864
6. Step 6: Final answer
   x = 2,794,500.34