Finding the Third Proportional to 2,411.86 and 4,890.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.86 : 4,890.80 = 4,890.80 : x
2. Step 2: Convert to fraction form
   2,411.86/4,890.80 = 4,890.80/x
3. Step 3: Cross multiply
   2,411.86x = 4,890.80 × 4,890.80
4. Step 4: Simplify right side
   2,411.86x = 23,919,894.07
5. Step 5: Solve for x
   x = 23,919,894.07/2,411.86
6. Step 6: Final answer
   x = 9,917.62