Finding the Third Proportional to 161,291.25 and 354,699

Step by Step Solution

1. Step 1: Write the proportion equation
   161,291.25 : 354,699 = 354,699 : x
2. Step 2: Convert to fraction form
   161,291.25/354,699 = 354,699/x
3. Step 3: Cross multiply
   161,291.25x = 354,699 × 354,699
4. Step 4: Simplify right side
   161,291.25x = 125,811,380,601
5. Step 5: Solve for x
   x = 125,811,380,601/161,291.25
6. Step 6: Final answer
   x = 780,026.07