Finding the Third Proportional to 3,769.88 and 8,121.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,769.88 : 8,121.38 = 8,121.38 : x
2. Step 2: Convert to fraction form
   3,769.88/8,121.38 = 8,121.38/x
3. Step 3: Cross multiply
   3,769.88x = 8,121.38 × 8,121.38
4. Step 4: Simplify right side
   3,769.88x = 65,956,731.89
5. Step 5: Solve for x
   x = 65,956,731.89/3,769.88
6. Step 6: Final answer
   x = 17,495.73