Finding the Third Proportional to 9,839.50 and 21,234.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,839.50 : 21,234.50 = 21,234.50 : x
2. Step 2: Convert to fraction form
   9,839.50/21,234.50 = 21,234.50/x
3. Step 3: Cross multiply
   9,839.50x = 21,234.50 × 21,234.50
4. Step 4: Simplify right side
   9,839.50x = 450,903,990.25
5. Step 5: Solve for x
   x = 450,903,990.25/9,839.50
6. Step 6: Final answer
   x = 45,825.90