Finding the Third Proportional to 1,665,242 and 3,929,729

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665,242 : 3,929,729 = 3,929,729 : x
2. Step 2: Convert to fraction form
   1,665,242/3,929,729 = 3,929,729/x
3. Step 3: Cross multiply
   1,665,242x = 3,929,729 × 3,929,729
4. Step 4: Simplify right side
   1,665,242x = 15,442,770,013,441
5. Step 5: Solve for x
   x = 15,442,770,013,441/1,665,242
6. Step 6: Final answer
   x = 9,273,589.07