Finding the Third Proportional to 139,081 and 300,335

Step by Step Solution

1. Step 1: Write the proportion equation
   139,081 : 300,335 = 300,335 : x
2. Step 2: Convert to fraction form
   139,081/300,335 = 300,335/x
3. Step 3: Cross multiply
   139,081x = 300,335 × 300,335
4. Step 4: Simplify right side
   139,081x = 90,201,112,225
5. Step 5: Solve for x
   x = 90,201,112,225/139,081
6. Step 6: Final answer
   x = 648,550.93