Finding the Third Proportional to 339,103.50 and 529,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   339,103.50 : 529,147.50 = 529,147.50 : x
2. Step 2: Convert to fraction form
   339,103.50/529,147.50 = 529,147.50/x
3. Step 3: Cross multiply
   339,103.50x = 529,147.50 × 529,147.50
4. Step 4: Simplify right side
   339,103.50x = 279,997,076,756.25
5. Step 5: Solve for x
   x = 279,997,076,756.25/339,103.50
6. Step 6: Final answer
   x = 825,697.99