Finding the Third Proportional to 5,239,686 and 8,331,885

Step by Step Solution

1. Step 1: Write the proportion equation
   5,239,686 : 8,331,885 = 8,331,885 : x
2. Step 2: Convert to fraction form
   5,239,686/8,331,885 = 8,331,885/x
3. Step 3: Cross multiply
   5,239,686x = 8,331,885 × 8,331,885
4. Step 4: Simplify right side
   5,239,686x = 69,420,307,653,225
5. Step 5: Solve for x
   x = 69,420,307,653,225/5,239,686
6. Step 6: Final answer
   x = 13,248,944.24