Finding the Third Proportional to 9,965.75 and 21,146.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,965.75 : 21,146.50 = 21,146.50 : x
2. Step 2: Convert to fraction form
   9,965.75/21,146.50 = 21,146.50/x
3. Step 3: Cross multiply
   9,965.75x = 21,146.50 × 21,146.50
4. Step 4: Simplify right side
   9,965.75x = 447,174,462.25
5. Step 5: Solve for x
   x = 447,174,462.25/9,965.75
6. Step 6: Final answer
   x = 44,871.13