Finding the Third Proportional to 85,158 and 172,748

Step by Step Solution

1. Step 1: Write the proportion equation
   85,158 : 172,748 = 172,748 : x
2. Step 2: Convert to fraction form
   85,158/172,748 = 172,748/x
3. Step 3: Cross multiply
   85,158x = 172,748 × 172,748
4. Step 4: Simplify right side
   85,158x = 29,841,871,504
5. Step 5: Solve for x
   x = 29,841,871,504/85,158
6. Step 6: Final answer
   x = 350,429.45