Finding the Third Proportional to 13,653.56 and 21,709.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,653.56 : 21,709.69 = 21,709.69 : x
2. Step 2: Convert to fraction form
   13,653.56/21,709.69 = 21,709.69/x
3. Step 3: Cross multiply
   13,653.56x = 21,709.69 × 21,709.69
4. Step 4: Simplify right side
   13,653.56x = 471,310,531.35
5. Step 5: Solve for x
   x = 471,310,531.35/13,653.56
6. Step 6: Final answer
   x = 34,519.23