Finding the Third Proportional to 3,316 and 7,767.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,316 : 7,767.50 = 7,767.50 : x
2. Step 2: Convert to fraction form
   3,316/7,767.50 = 7,767.50/x
3. Step 3: Cross multiply
   3,316x = 7,767.50 × 7,767.50
4. Step 4: Simplify right side
   3,316x = 60,334,056.25
5. Step 5: Solve for x
   x = 60,334,056.25/3,316
6. Step 6: Final answer
   x = 18,194.83