Finding the Third Proportional to 85,419 and 170,736.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,419 : 170,736.50 = 170,736.50 : x
2. Step 2: Convert to fraction form
   85,419/170,736.50 = 170,736.50/x
3. Step 3: Cross multiply
   85,419x = 170,736.50 × 170,736.50
4. Step 4: Simplify right side
   85,419x = 29,150,952,432.25
5. Step 5: Solve for x
   x = 29,150,952,432.25/85,419
6. Step 6: Final answer
   x = 341,270.12