Finding the Third Proportional to 66.45 and 152.51

Step by Step Solution

1. Step 1: Write the proportion equation
   66.45 : 152.51 = 152.51 : x
2. Step 2: Convert to fraction form
   66.45/152.51 = 152.51/x
3. Step 3: Cross multiply
   66.45x = 152.51 × 152.51
4. Step 4: Simplify right side
   66.45x = 23,258.63
5. Step 5: Solve for x
   x = 23,258.63/66.45
6. Step 6: Final answer
   x = 350.04