Finding the Third Proportional to 200,436 and 435,072

Step by Step Solution

1. Step 1: Write the proportion equation
   200,436 : 435,072 = 435,072 : x
2. Step 2: Convert to fraction form
   200,436/435,072 = 435,072/x
3. Step 3: Cross multiply
   200,436x = 435,072 × 435,072
4. Step 4: Simplify right side
   200,436x = 189,287,645,184
5. Step 5: Solve for x
   x = 189,287,645,184/200,436
6. Step 6: Final answer
   x = 944,379.48