Finding the Third Proportional to 16,213.50 and 21,586.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,213.50 : 21,586.50 = 21,586.50 : x
2. Step 2: Convert to fraction form
   16,213.50/21,586.50 = 21,586.50/x
3. Step 3: Cross multiply
   16,213.50x = 21,586.50 × 21,586.50
4. Step 4: Simplify right side
   16,213.50x = 465,976,982.25
5. Step 5: Solve for x
   x = 465,976,982.25/16,213.50
6. Step 6: Final answer
   x = 28,740.06