Finding the Third Proportional to 3,889,413 and 8,402,004

Step by Step Solution

1. Step 1: Write the proportion equation
   3,889,413 : 8,402,004 = 8,402,004 : x
2. Step 2: Convert to fraction form
   3,889,413/8,402,004 = 8,402,004/x
3. Step 3: Cross multiply
   3,889,413x = 8,402,004 × 8,402,004
4. Step 4: Simplify right side
   3,889,413x = 70,593,671,216,016
5. Step 5: Solve for x
   x = 70,593,671,216,016/3,889,413
6. Step 6: Final answer
   x = 18,150,212.18