Finding the Third Proportional to 140,199.50 and 338,009

Step by Step Solution

1. Step 1: Write the proportion equation
   140,199.50 : 338,009 = 338,009 : x
2. Step 2: Convert to fraction form
   140,199.50/338,009 = 338,009/x
3. Step 3: Cross multiply
   140,199.50x = 338,009 × 338,009
4. Step 4: Simplify right side
   140,199.50x = 114,250,084,081
5. Step 5: Solve for x
   x = 114,250,084,081/140,199.50
6. Step 6: Final answer
   x = 814,910.78