Finding the Third Proportional to 155,967 and 319,311.75

Step by Step Solution

1. Step 1: Write the proportion equation
   155,967 : 319,311.75 = 319,311.75 : x
2. Step 2: Convert to fraction form
   155,967/319,311.75 = 319,311.75/x
3. Step 3: Cross multiply
   155,967x = 319,311.75 × 319,311.75
4. Step 4: Simplify right side
   155,967x = 101,959,993,688.06
5. Step 5: Solve for x
   x = 101,959,993,688.06/155,967
6. Step 6: Final answer
   x = 653,727.99