Finding the Third Proportional to 560,876 and 1,216,387

Step by Step Solution

1. Step 1: Write the proportion equation
   560,876 : 1,216,387 = 1,216,387 : x
2. Step 2: Convert to fraction form
   560,876/1,216,387 = 1,216,387/x
3. Step 3: Cross multiply
   560,876x = 1,216,387 × 1,216,387
4. Step 4: Simplify right side
   560,876x = 1,479,597,333,769
5. Step 5: Solve for x
   x = 1,479,597,333,769/560,876
6. Step 6: Final answer
   x = 2,638,011.49