Finding the Third Proportional to 869,764 and 1,224,816

Step by Step Solution

1. Step 1: Write the proportion equation
   869,764 : 1,224,816 = 1,224,816 : x
2. Step 2: Convert to fraction form
   869,764/1,224,816 = 1,224,816/x
3. Step 3: Cross multiply
   869,764x = 1,224,816 × 1,224,816
4. Step 4: Simplify right side
   869,764x = 1,500,174,233,856
5. Step 5: Solve for x
   x = 1,500,174,233,856/869,764
6. Step 6: Final answer
   x = 1,724,806.08