Finding the Third Proportional to 311,770.50 and 671,625

Step by Step Solution

1. Step 1: Write the proportion equation
   311,770.50 : 671,625 = 671,625 : x
2. Step 2: Convert to fraction form
   311,770.50/671,625 = 671,625/x
3. Step 3: Cross multiply
   311,770.50x = 671,625 × 671,625
4. Step 4: Simplify right side
   311,770.50x = 451,080,140,625
5. Step 5: Solve for x
   x = 451,080,140,625/311,770.50
6. Step 6: Final answer
   x = 1,446,833.94