Finding the Third Proportional to 4,499.30 and 10,815.40

Step by Step Solution

1. Step 1: Write the proportion equation
   4,499.30 : 10,815.40 = 10,815.40 : x
2. Step 2: Convert to fraction form
   4,499.30/10,815.40 = 10,815.40/x
3. Step 3: Cross multiply
   4,499.30x = 10,815.40 × 10,815.40
4. Step 4: Simplify right side
   4,499.30x = 116,972,843.36
5. Step 5: Solve for x
   x = 116,972,843.36/4,499.30
6. Step 6: Final answer
   x = 25,998.03