Finding the Third Proportional to 61.47 and 90.23

Step by Step Solution

1. Step 1: Write the proportion equation
   61.47 : 90.23 = 90.23 : x
2. Step 2: Convert to fraction form
   61.47/90.23 = 90.23/x
3. Step 3: Cross multiply
   61.47x = 90.23 × 90.23
4. Step 4: Simplify right side
   61.47x = 8,142.24
5. Step 5: Solve for x
   x = 8,142.24/61.47
6. Step 6: Final answer
   x = 132.46