Finding the Third Proportional to 763,399 and 1,036,780

Step by Step Solution

1. Step 1: Write the proportion equation
   763,399 : 1,036,780 = 1,036,780 : x
2. Step 2: Convert to fraction form
   763,399/1,036,780 = 1,036,780/x
3. Step 3: Cross multiply
   763,399x = 1,036,780 × 1,036,780
4. Step 4: Simplify right side
   763,399x = 1,074,912,768,400
5. Step 5: Solve for x
   x = 1,074,912,768,400/763,399
6. Step 6: Final answer
   x = 1,408,061.54