Finding the Third Proportional to 1,382,278 and 2,163,708

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382,278 : 2,163,708 = 2,163,708 : x
2. Step 2: Convert to fraction form
   1,382,278/2,163,708 = 2,163,708/x
3. Step 3: Cross multiply
   1,382,278x = 2,163,708 × 2,163,708
4. Step 4: Simplify right side
   1,382,278x = 4,681,632,309,264
5. Step 5: Solve for x
   x = 4,681,632,309,264/1,382,278
6. Step 6: Final answer
   x = 3,386,896.35