Finding the Third Proportional to 10,635 and 13,990.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,635 : 13,990.50 = 13,990.50 : x
2. Step 2: Convert to fraction form
   10,635/13,990.50 = 13,990.50/x
3. Step 3: Cross multiply
   10,635x = 13,990.50 × 13,990.50
4. Step 4: Simplify right side
   10,635x = 195,734,090.25
5. Step 5: Solve for x
   x = 195,734,090.25/10,635
6. Step 6: Final answer
   x = 18,404.71