Finding the Third Proportional to 9,158.25 and 13,913.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,158.25 : 13,913.25 = 13,913.25 : x
2. Step 2: Convert to fraction form
   9,158.25/13,913.25 = 13,913.25/x
3. Step 3: Cross multiply
   9,158.25x = 13,913.25 × 13,913.25
4. Step 4: Simplify right side
   9,158.25x = 193,578,525.56
5. Step 5: Solve for x
   x = 193,578,525.56/9,158.25
6. Step 6: Final answer
   x = 21,137.07