Finding the Third Proportional to 1,388,144 and 2,099,711

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,144 : 2,099,711 = 2,099,711 : x
2. Step 2: Convert to fraction form
   1,388,144/2,099,711 = 2,099,711/x
3. Step 3: Cross multiply
   1,388,144x = 2,099,711 × 2,099,711
4. Step 4: Simplify right side
   1,388,144x = 4,408,786,283,521
5. Step 5: Solve for x
   x = 4,408,786,283,521/1,388,144
6. Step 6: Final answer
   x = 3,176,029.49