Finding the Third Proportional to 250,722 and 388,392

Step by Step Solution

1. Step 1: Write the proportion equation
   250,722 : 388,392 = 388,392 : x
2. Step 2: Convert to fraction form
   250,722/388,392 = 388,392/x
3. Step 3: Cross multiply
   250,722x = 388,392 × 388,392
4. Step 4: Simplify right side
   250,722x = 150,848,345,664
5. Step 5: Solve for x
   x = 150,848,345,664/250,722
6. Step 6: Final answer
   x = 601,655.80