Finding the Third Proportional to 1,913,262 and 4,199,728

Step by Step Solution

1. Step 1: Write the proportion equation
   1,913,262 : 4,199,728 = 4,199,728 : x
2. Step 2: Convert to fraction form
   1,913,262/4,199,728 = 4,199,728/x
3. Step 3: Cross multiply
   1,913,262x = 4,199,728 × 4,199,728
4. Step 4: Simplify right side
   1,913,262x = 17,637,715,273,984
5. Step 5: Solve for x
   x = 17,637,715,273,984/1,913,262
6. Step 6: Final answer
   x = 9,218,661.78