Finding the Third Proportional to 3,438 and 7,666.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,438 : 7,666.50 = 7,666.50 : x
2. Step 2: Convert to fraction form
   3,438/7,666.50 = 7,666.50/x
3. Step 3: Cross multiply
   3,438x = 7,666.50 × 7,666.50
4. Step 4: Simplify right side
   3,438x = 58,775,222.25
5. Step 5: Solve for x
   x = 58,775,222.25/3,438
6. Step 6: Final answer
   x = 17,095.76