Finding the Third Proportional to 231,059 and 343,200

Step by Step Solution

1. Step 1: Write the proportion equation
   231,059 : 343,200 = 343,200 : x
2. Step 2: Convert to fraction form
   231,059/343,200 = 343,200/x
3. Step 3: Cross multiply
   231,059x = 343,200 × 343,200
4. Step 4: Simplify right side
   231,059x = 117,786,240,000
5. Step 5: Solve for x
   x = 117,786,240,000/231,059
6. Step 6: Final answer
   x = 509,766.94