Finding the Third Proportional to 322,515 and 500,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   322,515 : 500,404.50 = 500,404.50 : x
2. Step 2: Convert to fraction form
   322,515/500,404.50 = 500,404.50/x
3. Step 3: Cross multiply
   322,515x = 500,404.50 × 500,404.50
4. Step 4: Simplify right side
   322,515x = 250,404,663,620.25
5. Step 5: Solve for x
   x = 250,404,663,620.25/322,515
6. Step 6: Final answer
   x = 776,412.46