Finding the Third Proportional to 2,831.91 and 4,680.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,831.91 : 4,680.28 = 4,680.28 : x
2. Step 2: Convert to fraction form
   2,831.91/4,680.28 = 4,680.28/x
3. Step 3: Cross multiply
   2,831.91x = 4,680.28 × 4,680.28
4. Step 4: Simplify right side
   2,831.91x = 21,905,032.58
5. Step 5: Solve for x
   x = 21,905,032.58/2,831.91
6. Step 6: Final answer
   x = 7,735.08