Finding the Third Proportional to 161,805.69 and 352,018.75

Step by Step Solution

1. Step 1: Write the proportion equation
   161,805.69 : 352,018.75 = 352,018.75 : x
2. Step 2: Convert to fraction form
   161,805.69/352,018.75 = 352,018.75/x
3. Step 3: Cross multiply
   161,805.69x = 352,018.75 × 352,018.75
4. Step 4: Simplify right side
   161,805.69x = 123,917,200,351.56
5. Step 5: Solve for x
   x = 123,917,200,351.56/161,805.69
6. Step 6: Final answer
   x = 765,839.58