Finding the Third Proportional to 1,565,139 and 2,489,718

Step by Step Solution

1. Step 1: Write the proportion equation
   1,565,139 : 2,489,718 = 2,489,718 : x
2. Step 2: Convert to fraction form
   1,565,139/2,489,718 = 2,489,718/x
3. Step 3: Cross multiply
   1,565,139x = 2,489,718 × 2,489,718
4. Step 4: Simplify right side
   1,565,139x = 6,198,695,719,524
5. Step 5: Solve for x
   x = 6,198,695,719,524/1,565,139
6. Step 6: Final answer
   x = 3,960,476.17