Finding the Third Proportional to 911,780 and 2,110,607.50

Step by Step Solution

1. Step 1: Write the proportion equation
   911,780 : 2,110,607.50 = 2,110,607.50 : x
2. Step 2: Convert to fraction form
   911,780/2,110,607.50 = 2,110,607.50/x
3. Step 3: Cross multiply
   911,780x = 2,110,607.50 × 2,110,607.50
4. Step 4: Simplify right side
   911,780x = 4,454,664,019,056.25
5. Step 5: Solve for x
   x = 4,454,664,019,056.25/911,780
6. Step 6: Final answer
   x = 4,885,678.58