Finding the Third Proportional to 159,796.50 and 339,298.50

Step by Step Solution

1. Step 1: Write the proportion equation
   159,796.50 : 339,298.50 = 339,298.50 : x
2. Step 2: Convert to fraction form
   159,796.50/339,298.50 = 339,298.50/x
3. Step 3: Cross multiply
   159,796.50x = 339,298.50 × 339,298.50
4. Step 4: Simplify right side
   159,796.50x = 115,123,472,102.25
5. Step 5: Solve for x
   x = 115,123,472,102.25/159,796.50
6. Step 6: Final answer
   x = 720,438.01