Finding the Third Proportional to 162,128 and 353,488

Step by Step Solution

1. Step 1: Write the proportion equation
   162,128 : 353,488 = 353,488 : x
2. Step 2: Convert to fraction form
   162,128/353,488 = 353,488/x
3. Step 3: Cross multiply
   162,128x = 353,488 × 353,488
4. Step 4: Simplify right side
   162,128x = 124,953,766,144
5. Step 5: Solve for x
   x = 124,953,766,144/162,128
6. Step 6: Final answer
   x = 770,710.59