Finding the Third Proportional to 139,009 and 303,506

Step by Step Solution

1. Step 1: Write the proportion equation
   139,009 : 303,506 = 303,506 : x
2. Step 2: Convert to fraction form
   139,009/303,506 = 303,506/x
3. Step 3: Cross multiply
   139,009x = 303,506 × 303,506
4. Step 4: Simplify right side
   139,009x = 92,115,892,036
5. Step 5: Solve for x
   x = 92,115,892,036/139,009
6. Step 6: Final answer
   x = 662,661.35