Finding the Third Proportional to 2,086,560 and 4,571,640

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086,560 : 4,571,640 = 4,571,640 : x
2. Step 2: Convert to fraction form
   2,086,560/4,571,640 = 4,571,640/x
3. Step 3: Cross multiply
   2,086,560x = 4,571,640 × 4,571,640
4. Step 4: Simplify right side
   2,086,560x = 20,899,892,289,600
5. Step 5: Solve for x
   x = 20,899,892,289,600/2,086,560
6. Step 6: Final answer
   x = 10,016,434.84