Finding the Third Proportional to 100.81 and 152.88

Step by Step Solution

1. Step 1: Write the proportion equation
   100.81 : 152.88 = 152.88 : x
2. Step 2: Convert to fraction form
   100.81/152.88 = 152.88/x
3. Step 3: Cross multiply
   100.81x = 152.88 × 152.88
4. Step 4: Simplify right side
   100.81x = 23,370.77
5. Step 5: Solve for x
   x = 23,370.77/100.81
6. Step 6: Final answer
   x = 231.82