Finding the Third Proportional to 3,858,796 and 8,403,320

Step by Step Solution

1. Step 1: Write the proportion equation
   3,858,796 : 8,403,320 = 8,403,320 : x
2. Step 2: Convert to fraction form
   3,858,796/8,403,320 = 8,403,320/x
3. Step 3: Cross multiply
   3,858,796x = 8,403,320 × 8,403,320
4. Step 4: Simplify right side
   3,858,796x = 70,615,787,022,400
5. Step 5: Solve for x
   x = 70,615,787,022,400/3,858,796
6. Step 6: Final answer
   x = 18,299,953.41