Finding the Third Proportional to 8,386.03 and 10,513.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,386.03 : 10,513.55 = 10,513.55 : x
2. Step 2: Convert to fraction form
   8,386.03/10,513.55 = 10,513.55/x
3. Step 3: Cross multiply
   8,386.03x = 10,513.55 × 10,513.55
4. Step 4: Simplify right side
   8,386.03x = 110,534,667.89
5. Step 5: Solve for x
   x = 110,534,667.89/8,386.03
6. Step 6: Final answer
   x = 13,180.81