Finding the Third Proportional to 869,772 and 1,224,828

Step by Step Solution

1. Step 1: Write the proportion equation
   869,772 : 1,224,828 = 1,224,828 : x
2. Step 2: Convert to fraction form
   869,772/1,224,828 = 1,224,828/x
3. Step 3: Cross multiply
   869,772x = 1,224,828 × 1,224,828
4. Step 4: Simplify right side
   869,772x = 1,500,203,629,584
5. Step 5: Solve for x
   x = 1,500,203,629,584/869,772
6. Step 6: Final answer
   x = 1,724,824.01