Finding the Third Proportional to 339,139.50 and 524,889

Step by Step Solution

1. Step 1: Write the proportion equation
   339,139.50 : 524,889 = 524,889 : x
2. Step 2: Convert to fraction form
   339,139.50/524,889 = 524,889/x
3. Step 3: Cross multiply
   339,139.50x = 524,889 × 524,889
4. Step 4: Simplify right side
   339,139.50x = 275,508,462,321
5. Step 5: Solve for x
   x = 275,508,462,321/339,139.50
6. Step 6: Final answer
   x = 812,375.03