Finding the Third Proportional to 1,244,387 and 1,978,653

Step by Step Solution

1. Step 1: Write the proportion equation
   1,244,387 : 1,978,653 = 1,978,653 : x
2. Step 2: Convert to fraction form
   1,244,387/1,978,653 = 1,978,653/x
3. Step 3: Cross multiply
   1,244,387x = 1,978,653 × 1,978,653
4. Step 4: Simplify right side
   1,244,387x = 3,915,067,694,409
5. Step 5: Solve for x
   x = 3,915,067,694,409/1,244,387
6. Step 6: Final answer
   x = 3,146,181.77