Finding the Third Proportional to 152,112 and 330,456

Step by Step Solution

1. Step 1: Write the proportion equation
   152,112 : 330,456 = 330,456 : x
2. Step 2: Convert to fraction form
   152,112/330,456 = 330,456/x
3. Step 3: Cross multiply
   152,112x = 330,456 × 330,456
4. Step 4: Simplify right side
   152,112x = 109,201,167,936
5. Step 5: Solve for x
   x = 109,201,167,936/152,112
6. Step 6: Final answer
   x = 717,899.76