Finding the Third Proportional to 162,972 and 259,308

Step by Step Solution

1. Step 1: Write the proportion equation
   162,972 : 259,308 = 259,308 : x
2. Step 2: Convert to fraction form
   162,972/259,308 = 259,308/x
3. Step 3: Cross multiply
   162,972x = 259,308 × 259,308
4. Step 4: Simplify right side
   162,972x = 67,240,638,864
5. Step 5: Solve for x
   x = 67,240,638,864/162,972
6. Step 6: Final answer
   x = 412,590.13