Finding the Third Proportional to 161,575 and 345,142

Step by Step Solution

1. Step 1: Write the proportion equation
   161,575 : 345,142 = 345,142 : x
2. Step 2: Convert to fraction form
   161,575/345,142 = 345,142/x
3. Step 3: Cross multiply
   161,575x = 345,142 × 345,142
4. Step 4: Simplify right side
   161,575x = 119,123,000,164
5. Step 5: Solve for x
   x = 119,123,000,164/161,575
6. Step 6: Final answer
   x = 737,261.33