Finding the Third Proportional to 1,917,780 and 4,134,450

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917,780 : 4,134,450 = 4,134,450 : x
2. Step 2: Convert to fraction form
   1,917,780/4,134,450 = 4,134,450/x
3. Step 3: Cross multiply
   1,917,780x = 4,134,450 × 4,134,450
4. Step 4: Simplify right side
   1,917,780x = 17,093,676,802,500
5. Step 5: Solve for x
   x = 17,093,676,802,500/1,917,780
6. Step 6: Final answer
   x = 8,913,262.63