Finding the Third Proportional to 2,015.16 and 3,113.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.16 : 3,113.86 = 3,113.86 : x
2. Step 2: Convert to fraction form
   2,015.16/3,113.86 = 3,113.86/x
3. Step 3: Cross multiply
   2,015.16x = 3,113.86 × 3,113.86
4. Step 4: Simplify right side
   2,015.16x = 9,696,120.21
5. Step 5: Solve for x
   x = 9,696,120.21/2,015.16
6. Step 6: Final answer
   x = 4,811.60