Finding the Third Proportional to 210,064.50 and 315,252

Step by Step Solution

1. Step 1: Write the proportion equation
   210,064.50 : 315,252 = 315,252 : x
2. Step 2: Convert to fraction form
   210,064.50/315,252 = 315,252/x
3. Step 3: Cross multiply
   210,064.50x = 315,252 × 315,252
4. Step 4: Simplify right side
   210,064.50x = 99,383,823,504
5. Step 5: Solve for x
   x = 99,383,823,504/210,064.50
6. Step 6: Final answer
   x = 473,110.99