Finding the Third Proportional to 560,876 and 1,216,386

Step by Step Solution

1. Step 1: Write the proportion equation
   560,876 : 1,216,386 = 1,216,386 : x
2. Step 2: Convert to fraction form
   560,876/1,216,386 = 1,216,386/x
3. Step 3: Cross multiply
   560,876x = 1,216,386 × 1,216,386
4. Step 4: Simplify right side
   560,876x = 1,479,594,900,996
5. Step 5: Solve for x
   x = 1,479,594,900,996/560,876
6. Step 6: Final answer
   x = 2,638,007.15