Finding the Third Proportional to 8,635.50 and 13,647.75

Step by Step Solution

1. Step 1: Write the proportion equation
   8,635.50 : 13,647.75 = 13,647.75 : x
2. Step 2: Convert to fraction form
   8,635.50/13,647.75 = 13,647.75/x
3. Step 3: Cross multiply
   8,635.50x = 13,647.75 × 13,647.75
4. Step 4: Simplify right side
   8,635.50x = 186,261,080.06
5. Step 5: Solve for x
   x = 186,261,080.06/8,635.50
6. Step 6: Final answer
   x = 21,569.23