Finding the Third Proportional to 21,999.50 and 29,171.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,999.50 : 29,171.50 = 29,171.50 : x
2. Step 2: Convert to fraction form
   21,999.50/29,171.50 = 29,171.50/x
3. Step 3: Cross multiply
   21,999.50x = 29,171.50 × 29,171.50
4. Step 4: Simplify right side
   21,999.50x = 850,976,412.25
5. Step 5: Solve for x
   x = 850,976,412.25/21,999.50
6. Step 6: Final answer
   x = 38,681.63