Finding the Third Proportional to 436.69 and 918.38

Step by Step Solution

1. Step 1: Write the proportion equation
   436.69 : 918.38 = 918.38 : x
2. Step 2: Convert to fraction form
   436.69/918.38 = 918.38/x
3. Step 3: Cross multiply
   436.69x = 918.38 × 918.38
4. Step 4: Simplify right side
   436.69x = 843,412.64
5. Step 5: Solve for x
   x = 843,412.64/436.69
6. Step 6: Final answer
   x = 1,931.39