Finding the Third Proportional to 7,862.63 and 10,999.69

Step by Step Solution

1. Step 1: Write the proportion equation
   7,862.63 : 10,999.69 = 10,999.69 : x
2. Step 2: Convert to fraction form
   7,862.63/10,999.69 = 10,999.69/x
3. Step 3: Cross multiply
   7,862.63x = 10,999.69 × 10,999.69
4. Step 4: Simplify right side
   7,862.63x = 120,993,125.10
5. Step 5: Solve for x
   x = 120,993,125.10/7,862.63
6. Step 6: Final answer
   x = 15,388.39