Finding the Third Proportional to 911,780 and 2,110,607

Step by Step Solution

1. Step 1: Write the proportion equation
   911,780 : 2,110,607 = 2,110,607 : x
2. Step 2: Convert to fraction form
   911,780/2,110,607 = 2,110,607/x
3. Step 3: Cross multiply
   911,780x = 2,110,607 × 2,110,607
4. Step 4: Simplify right side
   911,780x = 4,454,661,908,449
5. Step 5: Solve for x
   x = 4,454,661,908,449/911,780
6. Step 6: Final answer
   x = 4,885,676.27