Finding the Third Proportional to 2,105,649.75 and 4,311,047.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,649.75 : 4,311,047.25 = 4,311,047.25 : x
2. Step 2: Convert to fraction form
   2,105,649.75/4,311,047.25 = 4,311,047.25/x
3. Step 3: Cross multiply
   2,105,649.75x = 4,311,047.25 × 4,311,047.25
4. Step 4: Simplify right side
   2,105,649.75x = 18,585,128,391,732.56
5. Step 5: Solve for x
   x = 18,585,128,391,732.56/2,105,649.75
6. Step 6: Final answer
   x = 8,826,315.20