Finding the Third Proportional to 1,394,665 and 2,155,112

Step by Step Solution

1. Step 1: Write the proportion equation
   1,394,665 : 2,155,112 = 2,155,112 : x
2. Step 2: Convert to fraction form
   1,394,665/2,155,112 = 2,155,112/x
3. Step 3: Cross multiply
   1,394,665x = 2,155,112 × 2,155,112
4. Step 4: Simplify right side
   1,394,665x = 4,644,507,732,544
5. Step 5: Solve for x
   x = 4,644,507,732,544/1,394,665
6. Step 6: Final answer
   x = 3,330,195.95