Finding the Third Proportional to 139,658 and 301,456

Step by Step Solution

1. Step 1: Write the proportion equation
   139,658 : 301,456 = 301,456 : x
2. Step 2: Convert to fraction form
   139,658/301,456 = 301,456/x
3. Step 3: Cross multiply
   139,658x = 301,456 × 301,456
4. Step 4: Simplify right side
   139,658x = 90,875,719,936
5. Step 5: Solve for x
   x = 90,875,719,936/139,658
6. Step 6: Final answer
   x = 650,701.86