Finding the Third Proportional to 31,907.25 and 67,849.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,907.25 : 67,849.31 = 67,849.31 : x
2. Step 2: Convert to fraction form
   31,907.25/67,849.31 = 67,849.31/x
3. Step 3: Cross multiply
   31,907.25x = 67,849.31 × 67,849.31
4. Step 4: Simplify right side
   31,907.25x = 4,603,529,206.72
5. Step 5: Solve for x
   x = 4,603,529,206.72/31,907.25
6. Step 6: Final answer
   x = 144,278.47