Finding the Third Proportional to 139,296 and 208,947

Step by Step Solution

1. Step 1: Write the proportion equation
   139,296 : 208,947 = 208,947 : x
2. Step 2: Convert to fraction form
   139,296/208,947 = 208,947/x
3. Step 3: Cross multiply
   139,296x = 208,947 × 208,947
4. Step 4: Simplify right side
   139,296x = 43,658,848,809
5. Step 5: Solve for x
   x = 43,658,848,809/139,296
6. Step 6: Final answer
   x = 313,425.00