Finding the Third Proportional to 100.31 and 245.91

Step by Step Solution

1. Step 1: Write the proportion equation
   100.31 : 245.91 = 245.91 : x
2. Step 2: Convert to fraction form
   100.31/245.91 = 245.91/x
3. Step 3: Cross multiply
   100.31x = 245.91 × 245.91
4. Step 4: Simplify right side
   100.31x = 60,469.88
5. Step 5: Solve for x
   x = 60,469.88/100.31
6. Step 6: Final answer
   x = 602.82