Finding the Third Proportional to 1,671,811 and 3,945,863

Step by Step Solution

1. Step 1: Write the proportion equation
   1,671,811 : 3,945,863 = 3,945,863 : x
2. Step 2: Convert to fraction form
   1,671,811/3,945,863 = 3,945,863/x
3. Step 3: Cross multiply
   1,671,811x = 3,945,863 × 3,945,863
4. Step 4: Simplify right side
   1,671,811x = 15,569,834,814,769
5. Step 5: Solve for x
   x = 15,569,834,814,769/1,671,811
6. Step 6: Final answer
   x = 9,313,154.90