Finding the Third Proportional to 162,426 and 342,624

Step by Step Solution

1. Step 1: Write the proportion equation
   162,426 : 342,624 = 342,624 : x
2. Step 2: Convert to fraction form
   162,426/342,624 = 342,624/x
3. Step 3: Cross multiply
   162,426x = 342,624 × 342,624
4. Step 4: Simplify right side
   162,426x = 117,391,205,376
5. Step 5: Solve for x
   x = 117,391,205,376/162,426
6. Step 6: Final answer
   x = 722,736.54