Finding the Third Proportional to 579,870 and 867,105

Step by Step Solution

1. Step 1: Write the proportion equation
   579,870 : 867,105 = 867,105 : x
2. Step 2: Convert to fraction form
   579,870/867,105 = 867,105/x
3. Step 3: Cross multiply
   579,870x = 867,105 × 867,105
4. Step 4: Simplify right side
   579,870x = 751,871,081,025
5. Step 5: Solve for x
   x = 751,871,081,025/579,870
6. Step 6: Final answer
   x = 1,296,620.07