Finding the Third Proportional to 911,320.50 and 2,109,780

Step by Step Solution

1. Step 1: Write the proportion equation
   911,320.50 : 2,109,780 = 2,109,780 : x
2. Step 2: Convert to fraction form
   911,320.50/2,109,780 = 2,109,780/x
3. Step 3: Cross multiply
   911,320.50x = 2,109,780 × 2,109,780
4. Step 4: Simplify right side
   911,320.50x = 4,451,171,648,400
5. Step 5: Solve for x
   x = 4,451,171,648,400/911,320.50
6. Step 6: Final answer
   x = 4,884,309.80