Finding the Third Proportional to 53.72 and 72.92

Step by Step Solution

1. Step 1: Write the proportion equation
   53.72 : 72.92 = 72.92 : x
2. Step 2: Convert to fraction form
   53.72/72.92 = 72.92/x
3. Step 3: Cross multiply
   53.72x = 72.92 × 72.92
4. Step 4: Simplify right side
   53.72x = 5,317.60
5. Step 5: Solve for x
   x = 5,317.60/53.72
6. Step 6: Final answer
   x = 98.99