Finding the Third Proportional to 66.19 and 100.22

Step by Step Solution

1. Step 1: Write the proportion equation
   66.19 : 100.22 = 100.22 : x
2. Step 2: Convert to fraction form
   66.19/100.22 = 100.22/x
3. Step 3: Cross multiply
   66.19x = 100.22 × 100.22
4. Step 4: Simplify right side
   66.19x = 10,043.80
5. Step 5: Solve for x
   x = 10,043.80/66.19
6. Step 6: Final answer
   x = 151.75