Finding the Third Proportional to 1,671,812 and 3,945,866

Step by Step Solution

1. Step 1: Write the proportion equation
   1,671,812 : 3,945,866 = 3,945,866 : x
2. Step 2: Convert to fraction form
   1,671,812/3,945,866 = 3,945,866/x
3. Step 3: Cross multiply
   1,671,812x = 3,945,866 × 3,945,866
4. Step 4: Simplify right side
   1,671,812x = 15,569,858,489,956
5. Step 5: Solve for x
   x = 15,569,858,489,956/1,671,812
6. Step 6: Final answer
   x = 9,313,163.50