Finding the Third Proportional to 139,660 and 301,460

Step by Step Solution

1. Step 1: Write the proportion equation
   139,660 : 301,460 = 301,460 : x
2. Step 2: Convert to fraction form
   139,660/301,460 = 301,460/x
3. Step 3: Cross multiply
   139,660x = 301,460 × 301,460
4. Step 4: Simplify right side
   139,660x = 90,878,131,600
5. Step 5: Solve for x
   x = 90,878,131,600/139,660
6. Step 6: Final answer
   x = 650,709.81