Finding the Third Proportional to 869,780 and 1,224,843

Step by Step Solution

1. Step 1: Write the proportion equation
   869,780 : 1,224,843 = 1,224,843 : x
2. Step 2: Convert to fraction form
   869,780/1,224,843 = 1,224,843/x
3. Step 3: Cross multiply
   869,780x = 1,224,843 × 1,224,843
4. Step 4: Simplify right side
   869,780x = 1,500,240,374,649
5. Step 5: Solve for x
   x = 1,500,240,374,649/869,780
6. Step 6: Final answer
   x = 1,724,850.39