Finding the Third Proportional to 1,671,815 and 3,945,873

Step by Step Solution

1. Step 1: Write the proportion equation
   1,671,815 : 3,945,873 = 3,945,873 : x
2. Step 2: Convert to fraction form
   1,671,815/3,945,873 = 3,945,873/x
3. Step 3: Cross multiply
   1,671,815x = 3,945,873 × 3,945,873
4. Step 4: Simplify right side
   1,671,815x = 15,569,913,732,129
5. Step 5: Solve for x
   x = 15,569,913,732,129/1,671,815
6. Step 6: Final answer
   x = 9,313,179.83