Finding the Third Proportional to 1,661,986 and 3,638,468

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661,986 : 3,638,468 = 3,638,468 : x
2. Step 2: Convert to fraction form
   1,661,986/3,638,468 = 3,638,468/x
3. Step 3: Cross multiply
   1,661,986x = 3,638,468 × 3,638,468
4. Step 4: Simplify right side
   1,661,986x = 13,238,449,387,024
5. Step 5: Solve for x
   x = 13,238,449,387,024/1,661,986
6. Step 6: Final answer
   x = 7,965,439.77