Finding the Third Proportional to 12,235.50 and 20,299.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,235.50 : 20,299.50 = 20,299.50 : x
2. Step 2: Convert to fraction form
   12,235.50/20,299.50 = 20,299.50/x
3. Step 3: Cross multiply
   12,235.50x = 20,299.50 × 20,299.50
4. Step 4: Simplify right side
   12,235.50x = 412,069,700.25
5. Step 5: Solve for x
   x = 412,069,700.25/12,235.50
6. Step 6: Final answer
   x = 33,678.21