Finding the Third Proportional to 140,448 and 307,171

Step by Step Solution

1. Step 1: Write the proportion equation
   140,448 : 307,171 = 307,171 : x
2. Step 2: Convert to fraction form
   140,448/307,171 = 307,171/x
3. Step 3: Cross multiply
   140,448x = 307,171 × 307,171
4. Step 4: Simplify right side
   140,448x = 94,354,023,241
5. Step 5: Solve for x
   x = 94,354,023,241/140,448
6. Step 6: Final answer
   x = 671,807.52