Finding the Third Proportional to 13,881.38 and 21,515.63

Step by Step Solution

1. Step 1: Write the proportion equation
   13,881.38 : 21,515.63 = 21,515.63 : x
2. Step 2: Convert to fraction form
   13,881.38/21,515.63 = 21,515.63/x
3. Step 3: Cross multiply
   13,881.38x = 21,515.63 × 21,515.63
4. Step 4: Simplify right side
   13,881.38x = 462,922,119.14
5. Step 5: Solve for x
   x = 462,922,119.14/13,881.38
6. Step 6: Final answer
   x = 33,348.43