Finding the Third Proportional to 3,994,476 and 8,626,309

Step by Step Solution

1. Step 1: Write the proportion equation
   3,994,476 : 8,626,309 = 8,626,309 : x
2. Step 2: Convert to fraction form
   3,994,476/8,626,309 = 8,626,309/x
3. Step 3: Cross multiply
   3,994,476x = 8,626,309 × 8,626,309
4. Step 4: Simplify right side
   3,994,476x = 74,413,206,963,481
5. Step 5: Solve for x
   x = 74,413,206,963,481/3,994,476
6. Step 6: Final answer
   x = 18,629,028.43