Finding the Third Proportional to 171,789 and 366,406.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,789 : 366,406.50 = 366,406.50 : x
2. Step 2: Convert to fraction form
   171,789/366,406.50 = 366,406.50/x
3. Step 3: Cross multiply
   171,789x = 366,406.50 × 366,406.50
4. Step 4: Simplify right side
   171,789x = 134,253,723,242.25
5. Step 5: Solve for x
   x = 134,253,723,242.25/171,789
6. Step 6: Final answer
   x = 781,503.61