Finding the Third Proportional to 1,920.38 and 3,913.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,920.38 : 3,913.88 = 3,913.88 : x
2. Step 2: Convert to fraction form
   1,920.38/3,913.88 = 3,913.88/x
3. Step 3: Cross multiply
   1,920.38x = 3,913.88 × 3,913.88
4. Step 4: Simplify right side
   1,920.38x = 15,318,417.52
5. Step 5: Solve for x
   x = 15,318,417.52/1,920.38
6. Step 6: Final answer
   x = 7,976.78