Finding the Third Proportional to 8,635.50 and 20,956.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,635.50 : 20,956.50 = 20,956.50 : x
2. Step 2: Convert to fraction form
   8,635.50/20,956.50 = 20,956.50/x
3. Step 3: Cross multiply
   8,635.50x = 20,956.50 × 20,956.50
4. Step 4: Simplify right side
   8,635.50x = 439,174,892.25
5. Step 5: Solve for x
   x = 439,174,892.25/8,635.50
6. Step 6: Final answer
   x = 50,856.92