Finding the Third Proportional to 155,364 and 336,648

Step by Step Solution

1. Step 1: Write the proportion equation
   155,364 : 336,648 = 336,648 : x
2. Step 2: Convert to fraction form
   155,364/336,648 = 336,648/x
3. Step 3: Cross multiply
   155,364x = 336,648 × 336,648
4. Step 4: Simplify right side
   155,364x = 113,331,875,904
5. Step 5: Solve for x
   x = 113,331,875,904/155,364
6. Step 6: Final answer
   x = 729,460.34