Finding the Third Proportional to 321,119 and 500,058.50

Step by Step Solution

1. Step 1: Write the proportion equation
   321,119 : 500,058.50 = 500,058.50 : x
2. Step 2: Convert to fraction form
   321,119/500,058.50 = 500,058.50/x
3. Step 3: Cross multiply
   321,119x = 500,058.50 × 500,058.50
4. Step 4: Simplify right side
   321,119x = 250,058,503,422.25
5. Step 5: Solve for x
   x = 250,058,503,422.25/321,119
6. Step 6: Final answer
   x = 778,709.77