Finding the Third Proportional to 155,378 and 333,412

Step by Step Solution

1. Step 1: Write the proportion equation
   155,378 : 333,412 = 333,412 : x
2. Step 2: Convert to fraction form
   155,378/333,412 = 333,412/x
3. Step 3: Cross multiply
   155,378x = 333,412 × 333,412
4. Step 4: Simplify right side
   155,378x = 111,163,561,744
5. Step 5: Solve for x
   x = 111,163,561,744/155,378
6. Step 6: Final answer
   x = 715,439.52