Finding the Third Proportional to 79,300 and 172,424

Step by Step Solution

1. Step 1: Write the proportion equation
   79,300 : 172,424 = 172,424 : x
2. Step 2: Convert to fraction form
   79,300/172,424 = 172,424/x
3. Step 3: Cross multiply
   79,300x = 172,424 × 172,424
4. Step 4: Simplify right side
   79,300x = 29,730,035,776
5. Step 5: Solve for x
   x = 29,730,035,776/79,300
6. Step 6: Final answer
   x = 374,905.87