Finding the Third Proportional to 8,921.25 and 13,858.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,921.25 : 13,858.88 = 13,858.88 : x
2. Step 2: Convert to fraction form
   8,921.25/13,858.88 = 13,858.88/x
3. Step 3: Cross multiply
   8,921.25x = 13,858.88 × 13,858.88
4. Step 4: Simplify right side
   8,921.25x = 192,068,416.27
5. Step 5: Solve for x
   x = 192,068,416.27/8,921.25
6. Step 6: Final answer
   x = 21,529.32