Finding the Third Proportional to 860,568 and 1,866,288

Step by Step Solution

1. Step 1: Write the proportion equation
   860,568 : 1,866,288 = 1,866,288 : x
2. Step 2: Convert to fraction form
   860,568/1,866,288 = 1,866,288/x
3. Step 3: Cross multiply
   860,568x = 1,866,288 × 1,866,288
4. Step 4: Simplify right side
   860,568x = 3,483,030,898,944
5. Step 5: Solve for x
   x = 3,483,030,898,944/860,568
6. Step 6: Final answer
   x = 4,047,362.79