Finding the Third Proportional to 43.88 and 78.22

Step by Step Solution

1. Step 1: Write the proportion equation
   43.88 : 78.22 = 78.22 : x
2. Step 2: Convert to fraction form
   43.88/78.22 = 78.22/x
3. Step 3: Cross multiply
   43.88x = 78.22 × 78.22
4. Step 4: Simplify right side
   43.88x = 6,118.17
5. Step 5: Solve for x
   x = 6,118.17/43.88
6. Step 6: Final answer
   x = 139.45