Finding the Third Proportional to 42.19 and 58.22

Step by Step Solution

1. Step 1: Write the proportion equation
   42.19 : 58.22 = 58.22 : x
2. Step 2: Convert to fraction form
   42.19/58.22 = 58.22/x
3. Step 3: Cross multiply
   42.19x = 58.22 × 58.22
4. Step 4: Simplify right side
   42.19x = 3,389.42
5. Step 5: Solve for x
   x = 3,389.42/42.19
6. Step 6: Final answer
   x = 80.34