Finding the Third Proportional to 85,474 and 132,690

Step by Step Solution

1. Step 1: Write the proportion equation
   85,474 : 132,690 = 132,690 : x
2. Step 2: Convert to fraction form
   85,474/132,690 = 132,690/x
3. Step 3: Cross multiply
   85,474x = 132,690 × 132,690
4. Step 4: Simplify right side
   85,474x = 17,606,636,100
5. Step 5: Solve for x
   x = 17,606,636,100/85,474
6. Step 6: Final answer
   x = 205,988.21