Finding the Third Proportional to 139,342 and 301,040

Step by Step Solution

1. Step 1: Write the proportion equation
   139,342 : 301,040 = 301,040 : x
2. Step 2: Convert to fraction form
   139,342/301,040 = 301,040/x
3. Step 3: Cross multiply
   139,342x = 301,040 × 301,040
4. Step 4: Simplify right side
   139,342x = 90,625,081,600
5. Step 5: Solve for x
   x = 90,625,081,600/139,342
6. Step 6: Final answer
   x = 650,378.79