Finding the Third Proportional to 426.41 and 637.98

Step by Step Solution

1. Step 1: Write the proportion equation
   426.41 : 637.98 = 637.98 : x
2. Step 2: Convert to fraction form
   426.41/637.98 = 637.98/x
3. Step 3: Cross multiply
   426.41x = 637.98 × 637.98
4. Step 4: Simplify right side
   426.41x = 407,019.08
5. Step 5: Solve for x
   x = 407,019.08/426.41
6. Step 6: Final answer
   x = 954.52