Finding the Third Proportional to 158,383.50 and 319,359

Step by Step Solution

1. Step 1: Write the proportion equation
   158,383.50 : 319,359 = 319,359 : x
2. Step 2: Convert to fraction form
   158,383.50/319,359 = 319,359/x
3. Step 3: Cross multiply
   158,383.50x = 319,359 × 319,359
4. Step 4: Simplify right side
   158,383.50x = 101,990,170,881
5. Step 5: Solve for x
   x = 101,990,170,881/158,383.50
6. Step 6: Final answer
   x = 643,944.42