Finding the Third Proportional to 156,958 and 336,380

Step by Step Solution

1. Step 1: Write the proportion equation
   156,958 : 336,380 = 336,380 : x
2. Step 2: Convert to fraction form
   156,958/336,380 = 336,380/x
3. Step 3: Cross multiply
   156,958x = 336,380 × 336,380
4. Step 4: Simplify right side
   156,958x = 113,151,504,400
5. Step 5: Solve for x
   x = 113,151,504,400/156,958
6. Step 6: Final answer
   x = 720,903.07