Finding the Third Proportional to 3,945.75 and 5,554.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.75 : 5,554.88 = 5,554.88 : x
2. Step 2: Convert to fraction form
   3,945.75/5,554.88 = 5,554.88/x
3. Step 3: Cross multiply
   3,945.75x = 5,554.88 × 5,554.88
4. Step 4: Simplify right side
   3,945.75x = 30,856,636.27
5. Step 5: Solve for x
   x = 30,856,636.27/3,945.75
6. Step 6: Final answer
   x = 7,820.22