Finding the Third Proportional to 210,479.50 and 465,256

Step by Step Solution

1. Step 1: Write the proportion equation
   210,479.50 : 465,256 = 465,256 : x
2. Step 2: Convert to fraction form
   210,479.50/465,256 = 465,256/x
3. Step 3: Cross multiply
   210,479.50x = 465,256 × 465,256
4. Step 4: Simplify right side
   210,479.50x = 216,463,145,536
5. Step 5: Solve for x
   x = 216,463,145,536/210,479.50
6. Step 6: Final answer
   x = 1,028,428.64