Finding the Third Proportional to 4,222.69 and 5,558.06

Step by Step Solution

1. Step 1: Write the proportion equation
   4,222.69 : 5,558.06 = 5,558.06 : x
2. Step 2: Convert to fraction form
   4,222.69/5,558.06 = 5,558.06/x
3. Step 3: Cross multiply
   4,222.69x = 5,558.06 × 5,558.06
4. Step 4: Simplify right side
   4,222.69x = 30,892,058.75
5. Step 5: Solve for x
   x = 30,892,058.75/4,222.69
6. Step 6: Final answer
   x = 7,315.73