Finding the Third Proportional to 763,405 and 1,036,790

Step by Step Solution

1. Step 1: Write the proportion equation
   763,405 : 1,036,790 = 1,036,790 : x
2. Step 2: Convert to fraction form
   763,405/1,036,790 = 1,036,790/x
3. Step 3: Cross multiply
   763,405x = 1,036,790 × 1,036,790
4. Step 4: Simplify right side
   763,405x = 1,074,933,504,100
5. Step 5: Solve for x
   x = 1,074,933,504,100/763,405
6. Step 6: Final answer
   x = 1,408,077.63