Finding the Third Proportional to 48.56 and 65.91

Step by Step Solution

1. Step 1: Write the proportion equation
   48.56 : 65.91 = 65.91 : x
2. Step 2: Convert to fraction form
   48.56/65.91 = 65.91/x
3. Step 3: Cross multiply
   48.56x = 65.91 × 65.91
4. Step 4: Simplify right side
   48.56x = 4,343.63
5. Step 5: Solve for x
   x = 4,343.63/48.56
6. Step 6: Final answer
   x = 89.44