Finding the Third Proportional to 169,040 and 259,850

Step by Step Solution

1. Step 1: Write the proportion equation
   169,040 : 259,850 = 259,850 : x
2. Step 2: Convert to fraction form
   169,040/259,850 = 259,850/x
3. Step 3: Cross multiply
   169,040x = 259,850 × 259,850
4. Step 4: Simplify right side
   169,040x = 67,522,022,500
5. Step 5: Solve for x
   x = 67,522,022,500/169,040
6. Step 6: Final answer
   x = 399,444.05