Finding the Third Proportional to 1,511,892 and 2,178,414

Step by Step Solution

1. Step 1: Write the proportion equation
   1,511,892 : 2,178,414 = 2,178,414 : x
2. Step 2: Convert to fraction form
   1,511,892/2,178,414 = 2,178,414/x
3. Step 3: Cross multiply
   1,511,892x = 2,178,414 × 2,178,414
4. Step 4: Simplify right side
   1,511,892x = 4,745,487,555,396
5. Step 5: Solve for x
   x = 4,745,487,555,396/1,511,892
6. Step 6: Final answer
   x = 3,138,774.17