Finding the Third Proportional to 339,970 and 500,060

Step by Step Solution

1. Step 1: Write the proportion equation
   339,970 : 500,060 = 500,060 : x
2. Step 2: Convert to fraction form
   339,970/500,060 = 500,060/x
3. Step 3: Cross multiply
   339,970x = 500,060 × 500,060
4. Step 4: Simplify right side
   339,970x = 250,060,003,600
5. Step 5: Solve for x
   x = 250,060,003,600/339,970
6. Step 6: Final answer
   x = 735,535.50