Finding the Third Proportional to 140,327 and 300,580

Step by Step Solution

1. Step 1: Write the proportion equation
   140,327 : 300,580 = 300,580 : x
2. Step 2: Convert to fraction form
   140,327/300,580 = 300,580/x
3. Step 3: Cross multiply
   140,327x = 300,580 × 300,580
4. Step 4: Simplify right side
   140,327x = 90,348,336,400
5. Step 5: Solve for x
   x = 90,348,336,400/140,327
6. Step 6: Final answer
   x = 643,841.43