Finding the Third Proportional to 574,810 and 870,166

Step by Step Solution

1. Step 1: Write the proportion equation
   574,810 : 870,166 = 870,166 : x
2. Step 2: Convert to fraction form
   574,810/870,166 = 870,166/x
3. Step 3: Cross multiply
   574,810x = 870,166 × 870,166
4. Step 4: Simplify right side
   574,810x = 757,188,867,556
5. Step 5: Solve for x
   x = 757,188,867,556/574,810
6. Step 6: Final answer
   x = 1,317,285.48