Finding the Third Proportional to 12,619 and 18,380.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,619 : 18,380.50 = 18,380.50 : x
2. Step 2: Convert to fraction form
   12,619/18,380.50 = 18,380.50/x
3. Step 3: Cross multiply
   12,619x = 18,380.50 × 18,380.50
4. Step 4: Simplify right side
   12,619x = 337,842,780.25
5. Step 5: Solve for x
   x = 337,842,780.25/12,619
6. Step 6: Final answer
   x = 26,772.55