Finding the Third Proportional to 3,308 and 5,117.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,308 : 5,117.50 = 5,117.50 : x
2. Step 2: Convert to fraction form
   3,308/5,117.50 = 5,117.50/x
3. Step 3: Cross multiply
   3,308x = 5,117.50 × 5,117.50
4. Step 4: Simplify right side
   3,308x = 26,188,806.25
5. Step 5: Solve for x
   x = 26,188,806.25/3,308
6. Step 6: Final answer
   x = 7,916.81