Finding the Third Proportional to 200,864 and 436,680

Step by Step Solution

1. Step 1: Write the proportion equation
   200,864 : 436,680 = 436,680 : x
2. Step 2: Convert to fraction form
   200,864/436,680 = 436,680/x
3. Step 3: Cross multiply
   200,864x = 436,680 × 436,680
4. Step 4: Simplify right side
   200,864x = 190,689,422,400
5. Step 5: Solve for x
   x = 190,689,422,400/200,864
6. Step 6: Final answer
   x = 949,345.94