Finding the Third Proportional to 418.50 and 901.69

Step by Step Solution

1. Step 1: Write the proportion equation
   418.50 : 901.69 = 901.69 : x
2. Step 2: Convert to fraction form
   418.50/901.69 = 901.69/x
3. Step 3: Cross multiply
   418.50x = 901.69 × 901.69
4. Step 4: Simplify right side
   418.50x = 813,040.35
5. Step 5: Solve for x
   x = 813,040.35/418.50
6. Step 6: Final answer
   x = 1,942.75