Finding the Third Proportional to 79,222.50 and 172,161

Step by Step Solution

1. Step 1: Write the proportion equation
   79,222.50 : 172,161 = 172,161 : x
2. Step 2: Convert to fraction form
   79,222.50/172,161 = 172,161/x
3. Step 3: Cross multiply
   79,222.50x = 172,161 × 172,161
4. Step 4: Simplify right side
   79,222.50x = 29,639,409,921
5. Step 5: Solve for x
   x = 29,639,409,921/79,222.50
6. Step 6: Final answer
   x = 374,128.69