Finding the Third Proportional to 3,903.75 and 8,377.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,903.75 : 8,377.88 = 8,377.88 : x
2. Step 2: Convert to fraction form
   3,903.75/8,377.88 = 8,377.88/x
3. Step 3: Cross multiply
   3,903.75x = 8,377.88 × 8,377.88
4. Step 4: Simplify right side
   3,903.75x = 70,188,789.52
5. Step 5: Solve for x
   x = 70,188,789.52/3,903.75
6. Step 6: Final answer
   x = 17,979.84