Finding the Third Proportional to 139,058 and 304,251

Step by Step Solution

1. Step 1: Write the proportion equation
   139,058 : 304,251 = 304,251 : x
2. Step 2: Convert to fraction form
   139,058/304,251 = 304,251/x
3. Step 3: Cross multiply
   139,058x = 304,251 × 304,251
4. Step 4: Simplify right side
   139,058x = 92,568,671,001
5. Step 5: Solve for x
   x = 92,568,671,001/139,058
6. Step 6: Final answer
   x = 665,683.89