Finding the Third Proportional to 149,904 and 319,228.50

Step by Step Solution

1. Step 1: Write the proportion equation
   149,904 : 319,228.50 = 319,228.50 : x
2. Step 2: Convert to fraction form
   149,904/319,228.50 = 319,228.50/x
3. Step 3: Cross multiply
   149,904x = 319,228.50 × 319,228.50
4. Step 4: Simplify right side
   149,904x = 101,906,835,212.25
5. Step 5: Solve for x
   x = 101,906,835,212.25/149,904
6. Step 6: Final answer
   x = 679,813.98