Finding the Third Proportional to 869,774 and 1,224,831

Step by Step Solution

1. Step 1: Write the proportion equation
   869,774 : 1,224,831 = 1,224,831 : x
2. Step 2: Convert to fraction form
   869,774/1,224,831 = 1,224,831/x
3. Step 3: Cross multiply
   869,774x = 1,224,831 × 1,224,831
4. Step 4: Simplify right side
   869,774x = 1,500,210,978,561
5. Step 5: Solve for x
   x = 1,500,210,978,561/869,774
6. Step 6: Final answer
   x = 1,724,828.49