Finding the Third Proportional to 149,016 and 319,339.50

Step by Step Solution

1. Step 1: Write the proportion equation
   149,016 : 319,339.50 = 319,339.50 : x
2. Step 2: Convert to fraction form
   149,016/319,339.50 = 319,339.50/x
3. Step 3: Cross multiply
   149,016x = 319,339.50 × 319,339.50
4. Step 4: Simplify right side
   149,016x = 101,977,716,260.25
5. Step 5: Solve for x
   x = 101,977,716,260.25/149,016
6. Step 6: Final answer
   x = 684,340.72