Finding the Third Proportional to 200,418 and 435,036

Step by Step Solution

1. Step 1: Write the proportion equation
   200,418 : 435,036 = 435,036 : x
2. Step 2: Convert to fraction form
   200,418/435,036 = 435,036/x
3. Step 3: Cross multiply
   200,418x = 435,036 × 435,036
4. Step 4: Simplify right side
   200,418x = 189,256,321,296
5. Step 5: Solve for x
   x = 189,256,321,296/200,418
6. Step 6: Final answer
   x = 944,308.00