Finding the Third Proportional to 3,699 and 8,116.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,699 : 8,116.50 = 8,116.50 : x
2. Step 2: Convert to fraction form
   3,699/8,116.50 = 8,116.50/x
3. Step 3: Cross multiply
   3,699x = 8,116.50 × 8,116.50
4. Step 4: Simplify right side
   3,699x = 65,877,572.25
5. Step 5: Solve for x
   x = 65,877,572.25/3,699
6. Step 6: Final answer
   x = 17,809.56