Finding the Third Proportional to 61.17 and 90.07

Step by Step Solution

1. Step 1: Write the proportion equation
   61.17 : 90.07 = 90.07 : x
2. Step 2: Convert to fraction form
   61.17/90.07 = 90.07/x
3. Step 3: Cross multiply
   61.17x = 90.07 × 90.07
4. Step 4: Simplify right side
   61.17x = 8,112.66
5. Step 5: Solve for x
   x = 8,112.66/61.17
6. Step 6: Final answer
   x = 132.62