Finding the Third Proportional to 140,447.50 and 307,170

Step by Step Solution

1. Step 1: Write the proportion equation
   140,447.50 : 307,170 = 307,170 : x
2. Step 2: Convert to fraction form
   140,447.50/307,170 = 307,170/x
3. Step 3: Cross multiply
   140,447.50x = 307,170 × 307,170
4. Step 4: Simplify right side
   140,447.50x = 94,353,408,900
5. Step 5: Solve for x
   x = 94,353,408,900/140,447.50
6. Step 6: Final answer
   x = 671,805.54