Finding the Third Proportional to 2,146,218 and 4,548,288

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146,218 : 4,548,288 = 4,548,288 : x
2. Step 2: Convert to fraction form
   2,146,218/4,548,288 = 4,548,288/x
3. Step 3: Cross multiply
   2,146,218x = 4,548,288 × 4,548,288
4. Step 4: Simplify right side
   2,146,218x = 20,686,923,730,944
5. Step 5: Solve for x
   x = 20,686,923,730,944/2,146,218
6. Step 6: Final answer
   x = 9,638,780.28