Finding the Third Proportional to 61.94 and 90.77

Step by Step Solution

1. Step 1: Write the proportion equation
   61.94 : 90.77 = 90.77 : x
2. Step 2: Convert to fraction form
   61.94/90.77 = 90.77/x
3. Step 3: Cross multiply
   61.94x = 90.77 × 90.77
4. Step 4: Simplify right side
   61.94x = 8,239.02
5. Step 5: Solve for x
   x = 8,239.02/61.94
6. Step 6: Final answer
   x = 133.02