Finding the Third Proportional to 1,671,808 and 3,945,856

Step by Step Solution

1. Step 1: Write the proportion equation
   1,671,808 : 3,945,856 = 3,945,856 : x
2. Step 2: Convert to fraction form
   1,671,808/3,945,856 = 3,945,856/x
3. Step 3: Cross multiply
   1,671,808x = 3,945,856 × 3,945,856
4. Step 4: Simplify right side
   1,671,808x = 15,569,779,572,736
5. Step 5: Solve for x
   x = 15,569,779,572,736/1,671,808
6. Step 6: Final answer
   x = 9,313,138.57