Finding the Third Proportional to 21,031.50 and 31,245

Step by Step Solution

1. Step 1: Write the proportion equation
   21,031.50 : 31,245 = 31,245 : x
2. Step 2: Convert to fraction form
   21,031.50/31,245 = 31,245/x
3. Step 3: Cross multiply
   21,031.50x = 31,245 × 31,245
4. Step 4: Simplify right side
   21,031.50x = 976,250,025
5. Step 5: Solve for x
   x = 976,250,025/21,031.50
6. Step 6: Final answer
   x = 46,418.47