Finding the Third Proportional to 1,910.25 and 3,940.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,910.25 : 3,940.31 = 3,940.31 : x
2. Step 2: Convert to fraction form
   1,910.25/3,940.31 = 3,940.31/x
3. Step 3: Cross multiply
   1,910.25x = 3,940.31 × 3,940.31
4. Step 4: Simplify right side
   1,910.25x = 15,526,062.60
5. Step 5: Solve for x
   x = 15,526,062.60/1,910.25
6. Step 6: Final answer
   x = 8,127.76