Finding the Third Proportional to 21,249 and 31,286.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,249 : 31,286.25 = 31,286.25 : x
2. Step 2: Convert to fraction form
   21,249/31,286.25 = 31,286.25/x
3. Step 3: Cross multiply
   21,249x = 31,286.25 × 31,286.25
4. Step 4: Simplify right side
   21,249x = 978,829,439.06
5. Step 5: Solve for x
   x = 978,829,439.06/21,249
6. Step 6: Final answer
   x = 46,064.73