Finding the Third Proportional to 149,908 and 319,236.50

Step by Step Solution

1. Step 1: Write the proportion equation
   149,908 : 319,236.50 = 319,236.50 : x
2. Step 2: Convert to fraction form
   149,908/319,236.50 = 319,236.50/x
3. Step 3: Cross multiply
   149,908x = 319,236.50 × 319,236.50
4. Step 4: Simplify right side
   149,908x = 101,911,942,932.25
5. Step 5: Solve for x
   x = 101,911,942,932.25/149,908
6. Step 6: Final answer
   x = 679,829.92