Finding the Third Proportional to 161,097.61 and 318,132.56

Step by Step Solution

1. Step 1: Write the proportion equation
   161,097.61 : 318,132.56 = 318,132.56 : x
2. Step 2: Convert to fraction form
   161,097.61/318,132.56 = 318,132.56/x
3. Step 3: Cross multiply
   161,097.61x = 318,132.56 × 318,132.56
4. Step 4: Simplify right side
   161,097.61x = 101,208,327,322.82
5. Step 5: Solve for x
   x = 101,208,327,322.82/161,097.61
6. Step 6: Final answer
   x = 628,242.27