Finding the Third Proportional to 2,111.63 and 3,155.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.63 : 3,155.63 = 3,155.63 : x
2. Step 2: Convert to fraction form
   2,111.63/3,155.63 = 3,155.63/x
3. Step 3: Cross multiply
   2,111.63x = 3,155.63 × 3,155.63
4. Step 4: Simplify right side
   2,111.63x = 9,957,969.14
5. Step 5: Solve for x
   x = 9,957,969.14/2,111.63
6. Step 6: Final answer
   x = 4,715.78