Finding the Third Proportional to 105,259 and 200,818

Step by Step Solution

1. Step 1: Write the proportion equation
   105,259 : 200,818 = 200,818 : x
2. Step 2: Convert to fraction form
   105,259/200,818 = 200,818/x
3. Step 3: Cross multiply
   105,259x = 200,818 × 200,818
4. Step 4: Simplify right side
   105,259x = 40,327,869,124
5. Step 5: Solve for x
   x = 40,327,869,124/105,259
6. Step 6: Final answer
   x = 383,129.89