Finding the Third Proportional to 269,809.50 and 389,796

Step by Step Solution

1. Step 1: Write the proportion equation
   269,809.50 : 389,796 = 389,796 : x
2. Step 2: Convert to fraction form
   269,809.50/389,796 = 389,796/x
3. Step 3: Cross multiply
   269,809.50x = 389,796 × 389,796
4. Step 4: Simplify right side
   269,809.50x = 151,940,921,616
5. Step 5: Solve for x
   x = 151,940,921,616/269,809.50
6. Step 6: Final answer
   x = 563,141.48