Finding the Third Proportional to 154,834.50 and 339,174

Step by Step Solution

1. Step 1: Write the proportion equation
   154,834.50 : 339,174 = 339,174 : x
2. Step 2: Convert to fraction form
   154,834.50/339,174 = 339,174/x
3. Step 3: Cross multiply
   154,834.50x = 339,174 × 339,174
4. Step 4: Simplify right side
   154,834.50x = 115,039,002,276
5. Step 5: Solve for x
   x = 115,039,002,276/154,834.50
6. Step 6: Final answer
   x = 742,980.42