Finding the Third Proportional to 2,857,680 and 3,936,600

Step by Step Solution

1. Step 1: Write the proportion equation
   2,857,680 : 3,936,600 = 3,936,600 : x
2. Step 2: Convert to fraction form
   2,857,680/3,936,600 = 3,936,600/x
3. Step 3: Cross multiply
   2,857,680x = 3,936,600 × 3,936,600
4. Step 4: Simplify right side
   2,857,680x = 15,496,819,560,000
5. Step 5: Solve for x
   x = 15,496,819,560,000/2,857,680
6. Step 6: Final answer
   x = 5,422,867.35