Finding the Third Proportional to 560,872 and 870,116

Step by Step Solution

1. Step 1: Write the proportion equation
   560,872 : 870,116 = 870,116 : x
2. Step 2: Convert to fraction form
   560,872/870,116 = 870,116/x
3. Step 3: Cross multiply
   560,872x = 870,116 × 870,116
4. Step 4: Simplify right side
   560,872x = 757,101,853,456
5. Step 5: Solve for x
   x = 757,101,853,456/560,872
6. Step 6: Final answer
   x = 1,349,865.66