Finding the Third Proportional to 9,991.50 and 20,327.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,991.50 : 20,327.25 = 20,327.25 : x
2. Step 2: Convert to fraction form
   9,991.50/20,327.25 = 20,327.25/x
3. Step 3: Cross multiply
   9,991.50x = 20,327.25 × 20,327.25
4. Step 4: Simplify right side
   9,991.50x = 413,197,092.56
5. Step 5: Solve for x
   x = 413,197,092.56/9,991.50
6. Step 6: Final answer
   x = 41,354.86