Finding the Third Proportional to 139,347 and 205,740

Step by Step Solution

1. Step 1: Write the proportion equation
   139,347 : 205,740 = 205,740 : x
2. Step 2: Convert to fraction form
   139,347/205,740 = 205,740/x
3. Step 3: Cross multiply
   139,347x = 205,740 × 205,740
4. Step 4: Simplify right side
   139,347x = 42,328,947,600
5. Step 5: Solve for x
   x = 42,328,947,600/139,347
6. Step 6: Final answer
   x = 303,766.48