Finding the Third Proportional to 2,530.31 and 5,558.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,530.31 : 5,558.81 = 5,558.81 : x
2. Step 2: Convert to fraction form
   2,530.31/5,558.81 = 5,558.81/x
3. Step 3: Cross multiply
   2,530.31x = 5,558.81 × 5,558.81
4. Step 4: Simplify right side
   2,530.31x = 30,900,396.41
5. Step 5: Solve for x
   x = 30,900,396.41/2,530.31
6. Step 6: Final answer
   x = 12,212.09