Finding the Third Proportional to 4,131,678 and 8,949,444

Step by Step Solution

1. Step 1: Write the proportion equation
   4,131,678 : 8,949,444 = 8,949,444 : x
2. Step 2: Convert to fraction form
   4,131,678/8,949,444 = 8,949,444/x
3. Step 3: Cross multiply
   4,131,678x = 8,949,444 × 8,949,444
4. Step 4: Simplify right side
   4,131,678x = 80,092,547,909,136
5. Step 5: Solve for x
   x = 80,092,547,909,136/4,131,678
6. Step 6: Final answer
   x = 19,384,992.71