Finding the Third Proportional to 161,699.50 and 340,155

Step by Step Solution

1. Step 1: Write the proportion equation
   161,699.50 : 340,155 = 340,155 : x
2. Step 2: Convert to fraction form
   161,699.50/340,155 = 340,155/x
3. Step 3: Cross multiply
   161,699.50x = 340,155 × 340,155
4. Step 4: Simplify right side
   161,699.50x = 115,705,424,025
5. Step 5: Solve for x
   x = 115,705,424,025/161,699.50
6. Step 6: Final answer
   x = 715,558.33