Finding the Third Proportional to 171,819 and 355,423.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,819 : 355,423.50 = 355,423.50 : x
2. Step 2: Convert to fraction form
   171,819/355,423.50 = 355,423.50/x
3. Step 3: Cross multiply
   171,819x = 355,423.50 × 355,423.50
4. Step 4: Simplify right side
   171,819x = 126,325,864,352.25
5. Step 5: Solve for x
   x = 126,325,864,352.25/171,819
6. Step 6: Final answer
   x = 735,226.40