Finding the Third Proportional to 161,809.50 and 354,723

Step by Step Solution

1. Step 1: Write the proportion equation
   161,809.50 : 354,723 = 354,723 : x
2. Step 2: Convert to fraction form
   161,809.50/354,723 = 354,723/x
3. Step 3: Cross multiply
   161,809.50x = 354,723 × 354,723
4. Step 4: Simplify right side
   161,809.50x = 125,828,406,729
5. Step 5: Solve for x
   x = 125,828,406,729/161,809.50
6. Step 6: Final answer
   x = 777,633.00