Finding the Third Proportional to 1,015,790 and 2,115,653

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015,790 : 2,115,653 = 2,115,653 : x
2. Step 2: Convert to fraction form
   1,015,790/2,115,653 = 2,115,653/x
3. Step 3: Cross multiply
   1,015,790x = 2,115,653 × 2,115,653
4. Step 4: Simplify right side
   1,015,790x = 4,475,987,616,409
5. Step 5: Solve for x
   x = 4,475,987,616,409/1,015,790
6. Step 6: Final answer
   x = 4,406,410.40