Finding the Third Proportional to 72,398 and 169,158

Step by Step Solution

1. Step 1: Write the proportion equation
   72,398 : 169,158 = 169,158 : x
2. Step 2: Convert to fraction form
   72,398/169,158 = 169,158/x
3. Step 3: Cross multiply
   72,398x = 169,158 × 169,158
4. Step 4: Simplify right side
   72,398x = 28,614,428,964
5. Step 5: Solve for x
   x = 28,614,428,964/72,398
6. Step 6: Final answer
   x = 395,237.84