Finding the Third Proportional to 2,857,450 and 3,891,309

Step by Step Solution

1. Step 1: Write the proportion equation
   2,857,450 : 3,891,309 = 3,891,309 : x
2. Step 2: Convert to fraction form
   2,857,450/3,891,309 = 3,891,309/x
3. Step 3: Cross multiply
   2,857,450x = 3,891,309 × 3,891,309
4. Step 4: Simplify right side
   2,857,450x = 15,142,285,733,481
5. Step 5: Solve for x
   x = 15,142,285,733,481/2,857,450
6. Step 6: Final answer
   x = 5,299,230.34