Finding the Third Proportional to 21,428.25 and 31,304.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,428.25 : 31,304.63 = 31,304.63 : x
2. Step 2: Convert to fraction form
   21,428.25/31,304.63 = 31,304.63/x
3. Step 3: Cross multiply
   21,428.25x = 31,304.63 × 31,304.63
4. Step 4: Simplify right side
   21,428.25x = 979,979,546.39
5. Step 5: Solve for x
   x = 979,979,546.39/21,428.25
6. Step 6: Final answer
   x = 45,733.06