Finding the Third Proportional to 159,439.50 and 349,979

Step by Step Solution

1. Step 1: Write the proportion equation
   159,439.50 : 349,979 = 349,979 : x
2. Step 2: Convert to fraction form
   159,439.50/349,979 = 349,979/x
3. Step 3: Cross multiply
   159,439.50x = 349,979 × 349,979
4. Step 4: Simplify right side
   159,439.50x = 122,485,300,441
5. Step 5: Solve for x
   x = 122,485,300,441/159,439.50
6. Step 6: Final answer
   x = 768,224.31