Finding the Third Proportional to 911,218 and 2,109,484

Step by Step Solution

1. Step 1: Write the proportion equation
   911,218 : 2,109,484 = 2,109,484 : x
2. Step 2: Convert to fraction form
   911,218/2,109,484 = 2,109,484/x
3. Step 3: Cross multiply
   911,218x = 2,109,484 × 2,109,484
4. Step 4: Simplify right side
   911,218x = 4,449,922,746,256
5. Step 5: Solve for x
   x = 4,449,922,746,256/911,218
6. Step 6: Final answer
   x = 4,883,488.63