Finding the Third Proportional to 4,863,009 and 7,628,355

Step by Step Solution

1. Step 1: Write the proportion equation
   4,863,009 : 7,628,355 = 7,628,355 : x
2. Step 2: Convert to fraction form
   4,863,009/7,628,355 = 7,628,355/x
3. Step 3: Cross multiply
   4,863,009x = 7,628,355 × 7,628,355
4. Step 4: Simplify right side
   4,863,009x = 58,191,800,006,025
5. Step 5: Solve for x
   x = 58,191,800,006,025/4,863,009
6. Step 6: Final answer
   x = 11,966,212.69