Finding the Third Proportional to 21,510 and 31,559.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,510 : 31,559.63 = 31,559.63 : x
2. Step 2: Convert to fraction form
   21,510/31,559.63 = 31,559.63/x
3. Step 3: Cross multiply
   21,510x = 31,559.63 × 31,559.63
4. Step 4: Simplify right side
   21,510x = 996,009,930.14
5. Step 5: Solve for x
   x = 996,009,930.14/21,510
6. Step 6: Final answer
   x = 46,304.51