Finding the Third Proportional to 200,540 and 436,360

Step by Step Solution

1. Step 1: Write the proportion equation
   200,540 : 436,360 = 436,360 : x
2. Step 2: Convert to fraction form
   200,540/436,360 = 436,360/x
3. Step 3: Cross multiply
   200,540x = 436,360 × 436,360
4. Step 4: Simplify right side
   200,540x = 190,410,049,600
5. Step 5: Solve for x
   x = 190,410,049,600/200,540
6. Step 6: Final answer
   x = 949,486.63