Finding the Third Proportional to 336,387 and 505,993.50

Step by Step Solution

1. Step 1: Write the proportion equation
   336,387 : 505,993.50 = 505,993.50 : x
2. Step 2: Convert to fraction form
   336,387/505,993.50 = 505,993.50/x
3. Step 3: Cross multiply
   336,387x = 505,993.50 × 505,993.50
4. Step 4: Simplify right side
   336,387x = 256,029,422,042.25
5. Step 5: Solve for x
   x = 256,029,422,042.25/336,387
6. Step 6: Final answer
   x = 761,115.69