Finding the Third Proportional to 156,456 and 336,498

Step by Step Solution

1. Step 1: Write the proportion equation
   156,456 : 336,498 = 336,498 : x
2. Step 2: Convert to fraction form
   156,456/336,498 = 336,498/x
3. Step 3: Cross multiply
   156,456x = 336,498 × 336,498
4. Step 4: Simplify right side
   156,456x = 113,230,904,004
5. Step 5: Solve for x
   x = 113,230,904,004/156,456
6. Step 6: Final answer
   x = 723,723.63