Finding the Third Proportional to 13,211 and 21,760.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,211 : 21,760.50 = 21,760.50 : x
2. Step 2: Convert to fraction form
   13,211/21,760.50 = 21,760.50/x
3. Step 3: Cross multiply
   13,211x = 21,760.50 × 21,760.50
4. Step 4: Simplify right side
   13,211x = 473,519,360.25
5. Step 5: Solve for x
   x = 473,519,360.25/13,211
6. Step 6: Final answer
   x = 35,842.81