Finding the Third Proportional to 139,844 and 298,910

Step by Step Solution

1. Step 1: Write the proportion equation
   139,844 : 298,910 = 298,910 : x
2. Step 2: Convert to fraction form
   139,844/298,910 = 298,910/x
3. Step 3: Cross multiply
   139,844x = 298,910 × 298,910
4. Step 4: Simplify right side
   139,844x = 89,347,188,100
5. Step 5: Solve for x
   x = 89,347,188,100/139,844
6. Step 6: Final answer
   x = 638,906.12