Finding the Third Proportional to 279,841.50 and 612,171

Step by Step Solution

1. Step 1: Write the proportion equation
   279,841.50 : 612,171 = 612,171 : x
2. Step 2: Convert to fraction form
   279,841.50/612,171 = 612,171/x
3. Step 3: Cross multiply
   279,841.50x = 612,171 × 612,171
4. Step 4: Simplify right side
   279,841.50x = 374,753,333,241
5. Step 5: Solve for x
   x = 374,753,333,241/279,841.50
6. Step 6: Final answer
   x = 1,339,162.82