Finding the Third Proportional to 173,640 and 356,496

Step by Step Solution

1. Step 1: Write the proportion equation
   173,640 : 356,496 = 356,496 : x
2. Step 2: Convert to fraction form
   173,640/356,496 = 356,496/x
3. Step 3: Cross multiply
   173,640x = 356,496 × 356,496
4. Step 4: Simplify right side
   173,640x = 127,089,398,016
5. Step 5: Solve for x
   x = 127,089,398,016/173,640
6. Step 6: Final answer
   x = 731,913.14