Finding the Third Proportional to 9,619.50 and 20,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,619.50 : 20,980.50 = 20,980.50 : x
2. Step 2: Convert to fraction form
   9,619.50/20,980.50 = 20,980.50/x
3. Step 3: Cross multiply
   9,619.50x = 20,980.50 × 20,980.50
4. Step 4: Simplify right side
   9,619.50x = 440,181,380.25
5. Step 5: Solve for x
   x = 440,181,380.25/9,619.50
6. Step 6: Final answer
   x = 45,759.28