Finding the Third Proportional to 21,265.50 and 31,240.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,265.50 : 31,240.50 = 31,240.50 : x
2. Step 2: Convert to fraction form
   21,265.50/31,240.50 = 31,240.50/x
3. Step 3: Cross multiply
   21,265.50x = 31,240.50 × 31,240.50
4. Step 4: Simplify right side
   21,265.50x = 975,968,840.25
5. Step 5: Solve for x
   x = 975,968,840.25/21,265.50
6. Step 6: Final answer
   x = 45,894.47