Finding the Third Proportional to 2,151.56 and 3,145.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.56 : 3,145.92 = 3,145.92 : x
2. Step 2: Convert to fraction form
   2,151.56/3,145.92 = 3,145.92/x
3. Step 3: Cross multiply
   2,151.56x = 3,145.92 × 3,145.92
4. Step 4: Simplify right side
   2,151.56x = 9,896,824.44
5. Step 5: Solve for x
   x = 9,896,824.44/2,151.56
6. Step 6: Final answer
   x = 4,599.83