Finding the Third Proportional to 100.13 and 215.94

Step by Step Solution

1. Step 1: Write the proportion equation
   100.13 : 215.94 = 215.94 : x
2. Step 2: Convert to fraction form
   100.13/215.94 = 215.94/x
3. Step 3: Cross multiply
   100.13x = 215.94 × 215.94
4. Step 4: Simplify right side
   100.13x = 46,629.00
5. Step 5: Solve for x
   x = 46,629.00/100.13
6. Step 6: Final answer
   x = 465.71