Finding the Third Proportional to 156,742 and 336,108

Step by Step Solution

1. Step 1: Write the proportion equation
   156,742 : 336,108 = 336,108 : x
2. Step 2: Convert to fraction form
   156,742/336,108 = 336,108/x
3. Step 3: Cross multiply
   156,742x = 336,108 × 336,108
4. Step 4: Simplify right side
   156,742x = 112,968,587,664
5. Step 5: Solve for x
   x = 112,968,587,664/156,742
6. Step 6: Final answer
   x = 720,729.53