Finding the Third Proportional to 1,382,286 and 2,163,720

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382,286 : 2,163,720 = 2,163,720 : x
2. Step 2: Convert to fraction form
   1,382,286/2,163,720 = 2,163,720/x
3. Step 3: Cross multiply
   1,382,286x = 2,163,720 × 2,163,720
4. Step 4: Simplify right side
   1,382,286x = 4,681,684,238,400
5. Step 5: Solve for x
   x = 4,681,684,238,400/1,382,286
6. Step 6: Final answer
   x = 3,386,914.31