Finding the Third Proportional to 171,854 and 259,992.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,854 : 259,992.50 = 259,992.50 : x
2. Step 2: Convert to fraction form
   171,854/259,992.50 = 259,992.50/x
3. Step 3: Cross multiply
   171,854x = 259,992.50 × 259,992.50
4. Step 4: Simplify right side
   171,854x = 67,596,100,056.25
5. Step 5: Solve for x
   x = 67,596,100,056.25/171,854
6. Step 6: Final answer
   x = 393,334.46