Finding the Third Proportional to 3,436.17 and 7,111.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,436.17 : 7,111.55 = 7,111.55 : x
2. Step 2: Convert to fraction form
   3,436.17/7,111.55 = 7,111.55/x
3. Step 3: Cross multiply
   3,436.17x = 7,111.55 × 7,111.55
4. Step 4: Simplify right side
   3,436.17x = 50,574,098.96
5. Step 5: Solve for x
   x = 50,574,098.96/3,436.17
6. Step 6: Final answer
   x = 14,718.15