Finding the Third Proportional to 3,516.75 and 7,686.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,516.75 : 7,686.98 = 7,686.98 : x
2. Step 2: Convert to fraction form
   3,516.75/7,686.98 = 7,686.98/x
3. Step 3: Cross multiply
   3,516.75x = 7,686.98 × 7,686.98
4. Step 4: Simplify right side
   3,516.75x = 59,089,728.78
5. Step 5: Solve for x
   x = 59,089,728.78/3,516.75
6. Step 6: Final answer
   x = 16,802.37