Finding the Third Proportional to 9,118.88 and 13,039.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,118.88 : 13,039.88 = 13,039.88 : x
2. Step 2: Convert to fraction form
   9,118.88/13,039.88 = 13,039.88/x
3. Step 3: Cross multiply
   9,118.88x = 13,039.88 × 13,039.88
4. Step 4: Simplify right side
   9,118.88x = 170,038,340.02
5. Step 5: Solve for x
   x = 170,038,340.02/9,118.88
6. Step 6: Final answer
   x = 18,646.86