Finding the Third Proportional to 8,590.50 and 13,665

Step by Step Solution

1. Step 1: Write the proportion equation
   8,590.50 : 13,665 = 13,665 : x
2. Step 2: Convert to fraction form
   8,590.50/13,665 = 13,665/x
3. Step 3: Cross multiply
   8,590.50x = 13,665 × 13,665
4. Step 4: Simplify right side
   8,590.50x = 186,732,225
5. Step 5: Solve for x
   x = 186,732,225/8,590.50
6. Step 6: Final answer
   x = 21,737.06