Finding the Third Proportional to 8,990,309 and 19,419,238

Step by Step Solution

1. Step 1: Write the proportion equation
   8,990,309 : 19,419,238 = 19,419,238 : x
2. Step 2: Convert to fraction form
   8,990,309/19,419,238 = 19,419,238/x
3. Step 3: Cross multiply
   8,990,309x = 19,419,238 × 19,419,238
4. Step 4: Simplify right side
   8,990,309x = 377,106,804,500,644
5. Step 5: Solve for x
   x = 377,106,804,500,644/8,990,309
6. Step 6: Final answer
   x = 41,945,922.49