Finding the Third Proportional to 156,640 and 333,800

Step by Step Solution

1. Step 1: Write the proportion equation
   156,640 : 333,800 = 333,800 : x
2. Step 2: Convert to fraction form
   156,640/333,800 = 333,800/x
3. Step 3: Cross multiply
   156,640x = 333,800 × 333,800
4. Step 4: Simplify right side
   156,640x = 111,422,440,000
5. Step 5: Solve for x
   x = 111,422,440,000/156,640
6. Step 6: Final answer
   x = 711,328.14