Finding the Third Proportional to 12,586.50 and 22,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,586.50 : 22,216.50 = 22,216.50 : x
2. Step 2: Convert to fraction form
   12,586.50/22,216.50 = 22,216.50/x
3. Step 3: Cross multiply
   12,586.50x = 22,216.50 × 22,216.50
4. Step 4: Simplify right side
   12,586.50x = 493,572,872.25
5. Step 5: Solve for x
   x = 493,572,872.25/12,586.50
6. Step 6: Final answer
   x = 39,214.47