Finding the Third Proportional to 139,844 and 209,726

Step by Step Solution

1. Step 1: Write the proportion equation
   139,844 : 209,726 = 209,726 : x
2. Step 2: Convert to fraction form
   139,844/209,726 = 209,726/x
3. Step 3: Cross multiply
   139,844x = 209,726 × 209,726
4. Step 4: Simplify right side
   139,844x = 43,984,995,076
5. Step 5: Solve for x
   x = 43,984,995,076/139,844
6. Step 6: Final answer
   x = 314,529.01