Finding the Third Proportional to 83,912 and 171,712

Step by Step Solution

1. Step 1: Write the proportion equation
   83,912 : 171,712 = 171,712 : x
2. Step 2: Convert to fraction form
   83,912/171,712 = 171,712/x
3. Step 3: Cross multiply
   83,912x = 171,712 × 171,712
4. Step 4: Simplify right side
   83,912x = 29,485,010,944
5. Step 5: Solve for x
   x = 29,485,010,944/83,912
6. Step 6: Final answer
   x = 351,380.15