Finding the Third Proportional to 139,161 and 300,550

Step by Step Solution

1. Step 1: Write the proportion equation
   139,161 : 300,550 = 300,550 : x
2. Step 2: Convert to fraction form
   139,161/300,550 = 300,550/x
3. Step 3: Cross multiply
   139,161x = 300,550 × 300,550
4. Step 4: Simplify right side
   139,161x = 90,330,302,500
5. Step 5: Solve for x
   x = 90,330,302,500/139,161
6. Step 6: Final answer
   x = 649,106.45