Finding the Third Proportional to 3,603,999 and 7,665,813

Step by Step Solution

1. Step 1: Write the proportion equation
   3,603,999 : 7,665,813 = 7,665,813 : x
2. Step 2: Convert to fraction form
   3,603,999/7,665,813 = 7,665,813/x
3. Step 3: Cross multiply
   3,603,999x = 7,665,813 × 7,665,813
4. Step 4: Simplify right side
   3,603,999x = 58,764,688,950,969
5. Step 5: Solve for x
   x = 58,764,688,950,969/3,603,999
6. Step 6: Final answer
   x = 16,305,412.11