Finding the Third Proportional to 172,035 and 260,644.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,035 : 260,644.50 = 260,644.50 : x
2. Step 2: Convert to fraction form
   172,035/260,644.50 = 260,644.50/x
3. Step 3: Cross multiply
   172,035x = 260,644.50 × 260,644.50
4. Step 4: Simplify right side
   172,035x = 67,935,555,380.25
5. Step 5: Solve for x
   x = 67,935,555,380.25/172,035
6. Step 6: Final answer
   x = 394,893.80