Finding the Third Proportional to 339,146 and 524,900

Step by Step Solution

1. Step 1: Write the proportion equation
   339,146 : 524,900 = 524,900 : x
2. Step 2: Convert to fraction form
   339,146/524,900 = 524,900/x
3. Step 3: Cross multiply
   339,146x = 524,900 × 524,900
4. Step 4: Simplify right side
   339,146x = 275,520,010,000
5. Step 5: Solve for x
   x = 275,520,010,000/339,146
6. Step 6: Final answer
   x = 812,393.51