Finding the Third Proportional to 3,921.75 and 8,116.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,921.75 : 8,116.88 = 8,116.88 : x
2. Step 2: Convert to fraction form
   3,921.75/8,116.88 = 8,116.88/x
3. Step 3: Cross multiply
   3,921.75x = 8,116.88 × 8,116.88
4. Step 4: Simplify right side
   3,921.75x = 65,883,659.77
5. Step 5: Solve for x
   x = 65,883,659.77/3,921.75
6. Step 6: Final answer
   x = 16,799.56