Finding the Third Proportional to 139,655 and 301,450

Step by Step Solution

1. Step 1: Write the proportion equation
   139,655 : 301,450 = 301,450 : x
2. Step 2: Convert to fraction form
   139,655/301,450 = 301,450/x
3. Step 3: Cross multiply
   139,655x = 301,450 × 301,450
4. Step 4: Simplify right side
   139,655x = 90,872,102,500
5. Step 5: Solve for x
   x = 90,872,102,500/139,655
6. Step 6: Final answer
   x = 650,689.93