Finding the Third Proportional to 21,022.69 and 31,622.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,022.69 : 31,622.63 = 31,622.63 : x
2. Step 2: Convert to fraction form
   21,022.69/31,622.63 = 31,622.63/x
3. Step 3: Cross multiply
   21,022.69x = 31,622.63 × 31,622.63
4. Step 4: Simplify right side
   21,022.69x = 999,990,411.89
5. Step 5: Solve for x
   x = 999,990,411.89/21,022.69
6. Step 6: Final answer
   x = 47,567.20