Finding the Third Proportional to 200,554 and 300,875

Step by Step Solution

1. Step 1: Write the proportion equation
   200,554 : 300,875 = 300,875 : x
2. Step 2: Convert to fraction form
   200,554/300,875 = 300,875/x
3. Step 3: Cross multiply
   200,554x = 300,875 × 300,875
4. Step 4: Simplify right side
   200,554x = 90,525,765,625
5. Step 5: Solve for x
   x = 90,525,765,625/200,554
6. Step 6: Final answer
   x = 451,378.51