Finding the Third Proportional to 7,111.13 and 16,618.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.13 : 16,618.50 = 16,618.50 : x
2. Step 2: Convert to fraction form
   7,111.13/16,618.50 = 16,618.50/x
3. Step 3: Cross multiply
   7,111.13x = 16,618.50 × 16,618.50
4. Step 4: Simplify right side
   7,111.13x = 276,174,542.25
5. Step 5: Solve for x
   x = 276,174,542.25/7,111.13
6. Step 6: Final answer
   x = 38,836.97