Finding the Third Proportional to 869,758 and 1,224,809

Step by Step Solution

1. Step 1: Write the proportion equation
   869,758 : 1,224,809 = 1,224,809 : x
2. Step 2: Convert to fraction form
   869,758/1,224,809 = 1,224,809/x
3. Step 3: Cross multiply
   869,758x = 1,224,809 × 1,224,809
4. Step 4: Simplify right side
   869,758x = 1,500,157,086,481
5. Step 5: Solve for x
   x = 1,500,157,086,481/869,758
6. Step 6: Final answer
   x = 1,724,798.26