Finding the Third Proportional to 100.69 and 272.91

Step by Step Solution

1. Step 1: Write the proportion equation
   100.69 : 272.91 = 272.91 : x
2. Step 2: Convert to fraction form
   100.69/272.91 = 272.91/x
3. Step 3: Cross multiply
   100.69x = 272.91 × 272.91
4. Step 4: Simplify right side
   100.69x = 74,477.82
5. Step 5: Solve for x
   x = 74,477.82/100.69
6. Step 6: Final answer
   x = 739.69