Finding the Third Proportional to 8,705.25 and 13,261.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,705.25 : 13,261.88 = 13,261.88 : x
2. Step 2: Convert to fraction form
   8,705.25/13,261.88 = 13,261.88/x
3. Step 3: Cross multiply
   8,705.25x = 13,261.88 × 13,261.88
4. Step 4: Simplify right side
   8,705.25x = 175,877,328.52
5. Step 5: Solve for x
   x = 175,877,328.52/8,705.25
6. Step 6: Final answer
   x = 20,203.59