Finding the Third Proportional to 161,386 and 345,008

Step by Step Solution

1. Step 1: Write the proportion equation
   161,386 : 345,008 = 345,008 : x
2. Step 2: Convert to fraction form
   161,386/345,008 = 345,008/x
3. Step 3: Cross multiply
   161,386x = 345,008 × 345,008
4. Step 4: Simplify right side
   161,386x = 119,030,520,064
5. Step 5: Solve for x
   x = 119,030,520,064/161,386
6. Step 6: Final answer
   x = 737,551.71