Finding the Third Proportional to 2,857,448 and 3,891,306

Step by Step Solution

1. Step 1: Write the proportion equation
   2,857,448 : 3,891,306 = 3,891,306 : x
2. Step 2: Convert to fraction form
   2,857,448/3,891,306 = 3,891,306/x
3. Step 3: Cross multiply
   2,857,448x = 3,891,306 × 3,891,306
4. Step 4: Simplify right side
   2,857,448x = 15,142,262,385,636
5. Step 5: Solve for x
   x = 15,142,262,385,636/2,857,448
6. Step 6: Final answer
   x = 5,299,225.88