Finding the Third Proportional to 61.50 and 99.56

Step by Step Solution

1. Step 1: Write the proportion equation
   61.50 : 99.56 = 99.56 : x
2. Step 2: Convert to fraction form
   61.50/99.56 = 99.56/x
3. Step 3: Cross multiply
   61.50x = 99.56 × 99.56
4. Step 4: Simplify right side
   61.50x = 9,912.69
5. Step 5: Solve for x
   x = 9,912.69/61.50
6. Step 6: Final answer
   x = 161.18