Finding the Third Proportional to 140,780 and 307,804

Step by Step Solution

1. Step 1: Write the proportion equation
   140,780 : 307,804 = 307,804 : x
2. Step 2: Convert to fraction form
   140,780/307,804 = 307,804/x
3. Step 3: Cross multiply
   140,780x = 307,804 × 307,804
4. Step 4: Simplify right side
   140,780x = 94,743,302,416
5. Step 5: Solve for x
   x = 94,743,302,416/140,780
6. Step 6: Final answer
   x = 672,988.37