Finding the Third Proportional to 140,093 and 311,290

Step by Step Solution

1. Step 1: Write the proportion equation
   140,093 : 311,290 = 311,290 : x
2. Step 2: Convert to fraction form
   140,093/311,290 = 311,290/x
3. Step 3: Cross multiply
   140,093x = 311,290 × 311,290
4. Step 4: Simplify right side
   140,093x = 96,901,464,100
5. Step 5: Solve for x
   x = 96,901,464,100/140,093
6. Step 6: Final answer
   x = 691,693.83