Finding the Third Proportional to 139,083 and 300,339

Step by Step Solution

1. Step 1: Write the proportion equation
   139,083 : 300,339 = 300,339 : x
2. Step 2: Convert to fraction form
   139,083/300,339 = 300,339/x
3. Step 3: Cross multiply
   139,083x = 300,339 × 300,339
4. Step 4: Simplify right side
   139,083x = 90,203,514,921
5. Step 5: Solve for x
   x = 90,203,514,921/139,083
6. Step 6: Final answer
   x = 648,558.88