Finding the Third Proportional to 8,644.13 and 17,605.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,644.13 : 17,605.31 = 17,605.31 : x
2. Step 2: Convert to fraction form
   8,644.13/17,605.31 = 17,605.31/x
3. Step 3: Cross multiply
   8,644.13x = 17,605.31 × 17,605.31
4. Step 4: Simplify right side
   8,644.13x = 309,947,028.22
5. Step 5: Solve for x
   x = 309,947,028.22/8,644.13
6. Step 6: Final answer
   x = 35,856.38