Finding the Third Proportional to 128,022 and 200,835

Step by Step Solution

1. Step 1: Write the proportion equation
   128,022 : 200,835 = 200,835 : x
2. Step 2: Convert to fraction form
   128,022/200,835 = 200,835/x
3. Step 3: Cross multiply
   128,022x = 200,835 × 200,835
4. Step 4: Simplify right side
   128,022x = 40,334,697,225
5. Step 5: Solve for x
   x = 40,334,697,225/128,022
6. Step 6: Final answer
   x = 315,060.67