Finding the Third Proportional to 46.31 and 72.28

Step by Step Solution

1. Step 1: Write the proportion equation
   46.31 : 72.28 = 72.28 : x
2. Step 2: Convert to fraction form
   46.31/72.28 = 72.28/x
3. Step 3: Cross multiply
   46.31x = 72.28 × 72.28
4. Step 4: Simplify right side
   46.31x = 5,224.26
5. Step 5: Solve for x
   x = 5,224.26/46.31
6. Step 6: Final answer
   x = 112.80