Finding the Third Proportional to 161,422.50 and 318,714

Step by Step Solution

1. Step 1: Write the proportion equation
   161,422.50 : 318,714 = 318,714 : x
2. Step 2: Convert to fraction form
   161,422.50/318,714 = 318,714/x
3. Step 3: Cross multiply
   161,422.50x = 318,714 × 318,714
4. Step 4: Simplify right side
   161,422.50x = 101,578,613,796
5. Step 5: Solve for x
   x = 101,578,613,796/161,422.50
6. Step 6: Final answer
   x = 629,271.72