Finding the Third Proportional to 2,190,892 and 4,707,728

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190,892 : 4,707,728 = 4,707,728 : x
2. Step 2: Convert to fraction form
   2,190,892/4,707,728 = 4,707,728/x
3. Step 3: Cross multiply
   2,190,892x = 4,707,728 × 4,707,728
4. Step 4: Simplify right side
   2,190,892x = 22,162,702,921,984
5. Step 5: Solve for x
   x = 22,162,702,921,984/2,190,892
6. Step 6: Final answer
   x = 10,115,835.43