Finding the Third Proportional to 129,504 and 200,010

Step by Step Solution

1. Step 1: Write the proportion equation
   129,504 : 200,010 = 200,010 : x
2. Step 2: Convert to fraction form
   129,504/200,010 = 200,010/x
3. Step 3: Cross multiply
   129,504x = 200,010 × 200,010
4. Step 4: Simplify right side
   129,504x = 40,004,000,100
5. Step 5: Solve for x
   x = 40,004,000,100/129,504
6. Step 6: Final answer
   x = 308,901.66