Finding the Third Proportional to 21,284.25 and 31,172.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,284.25 : 31,172.25 = 31,172.25 : x
2. Step 2: Convert to fraction form
   21,284.25/31,172.25 = 31,172.25/x
3. Step 3: Cross multiply
   21,284.25x = 31,172.25 × 31,172.25
4. Step 4: Simplify right side
   21,284.25x = 971,709,170.06
5. Step 5: Solve for x
   x = 971,709,170.06/21,284.25
6. Step 6: Final answer
   x = 45,653.91