Finding the Third Proportional to 100.50 and 147.25

Step by Step Solution

1. Step 1: Write the proportion equation
   100.50 : 147.25 = 147.25 : x
2. Step 2: Convert to fraction form
   100.50/147.25 = 147.25/x
3. Step 3: Cross multiply
   100.50x = 147.25 × 147.25
4. Step 4: Simplify right side
   100.50x = 21,682.56
5. Step 5: Solve for x
   x = 21,682.56/100.50
6. Step 6: Final answer
   x = 215.75