Finding the Third Proportional to 210,134.25 and 300,233.25

Step by Step Solution

1. Step 1: Write the proportion equation
   210,134.25 : 300,233.25 = 300,233.25 : x
2. Step 2: Convert to fraction form
   210,134.25/300,233.25 = 300,233.25/x
3. Step 3: Cross multiply
   210,134.25x = 300,233.25 × 300,233.25
4. Step 4: Simplify right side
   210,134.25x = 90,140,004,405.56
5. Step 5: Solve for x
   x = 90,140,004,405.56/210,134.25
6. Step 6: Final answer
   x = 428,963.89