Finding the Third Proportional to 1,123,218 and 2,456,387

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,218 : 2,456,387 = 2,456,387 : x
2. Step 2: Convert to fraction form
   1,123,218/2,456,387 = 2,456,387/x
3. Step 3: Cross multiply
   1,123,218x = 2,456,387 × 2,456,387
4. Step 4: Simplify right side
   1,123,218x = 6,033,837,093,769
5. Step 5: Solve for x
   x = 6,033,837,093,769/1,123,218
6. Step 6: Final answer
   x = 5,371,919.87