Finding the Third Proportional to 7,115.95 and 10,400.53

Step by Step Solution

1. Step 1: Write the proportion equation
   7,115.95 : 10,400.53 = 10,400.53 : x
2. Step 2: Convert to fraction form
   7,115.95/10,400.53 = 10,400.53/x
3. Step 3: Cross multiply
   7,115.95x = 10,400.53 × 10,400.53
4. Step 4: Simplify right side
   7,115.95x = 108,171,050.28
5. Step 5: Solve for x
   x = 108,171,050.28/7,115.95
6. Step 6: Final answer
   x = 15,201.20