Finding the Third Proportional to 152,488 and 315,368

Step by Step Solution

1. Step 1: Write the proportion equation
   152,488 : 315,368 = 315,368 : x
2. Step 2: Convert to fraction form
   152,488/315,368 = 315,368/x
3. Step 3: Cross multiply
   152,488x = 315,368 × 315,368
4. Step 4: Simplify right side
   152,488x = 99,456,975,424
5. Step 5: Solve for x
   x = 99,456,975,424/152,488
6. Step 6: Final answer
   x = 652,228.21