Finding the Third Proportional to 145,395 and 317,792.25

Step by Step Solution

1. Step 1: Write the proportion equation
   145,395 : 317,792.25 = 317,792.25 : x
2. Step 2: Convert to fraction form
   145,395/317,792.25 = 317,792.25/x
3. Step 3: Cross multiply
   145,395x = 317,792.25 × 317,792.25
4. Step 4: Simplify right side
   145,395x = 100,991,914,160.06
5. Step 5: Solve for x
   x = 100,991,914,160.06/145,395
6. Step 6: Final answer
   x = 694,603.76