Finding the Third Proportional to 200,976.50 and 418,492

Step by Step Solution

1. Step 1: Write the proportion equation
   200,976.50 : 418,492 = 418,492 : x
2. Step 2: Convert to fraction form
   200,976.50/418,492 = 418,492/x
3. Step 3: Cross multiply
   200,976.50x = 418,492 × 418,492
4. Step 4: Simplify right side
   200,976.50x = 175,135,554,064
5. Step 5: Solve for x
   x = 175,135,554,064/200,976.50
6. Step 6: Final answer
   x = 871,423.05