Finding the Third Proportional to 30.19 and 45.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30.19 : 45.72 = 45.72 : x
2. Step 2: Convert to fraction form
   30.19/45.72 = 45.72/x
3. Step 3: Cross multiply
   30.19x = 45.72 × 45.72
4. Step 4: Simplify right side
   30.19x = 2,090.38
5. Step 5: Solve for x
   x = 2,090.38/30.19
6. Step 6: Final answer
   x = 69.24