Finding the Third Proportional to 8,661 and 17,985

Step by Step Solution

1. Step 1: Write the proportion equation
   8,661 : 17,985 = 17,985 : x
2. Step 2: Convert to fraction form
   8,661/17,985 = 17,985/x
3. Step 3: Cross multiply
   8,661x = 17,985 × 17,985
4. Step 4: Simplify right side
   8,661x = 323,460,225
5. Step 5: Solve for x
   x = 323,460,225/8,661
6. Step 6: Final answer
   x = 37,346.75