Finding the Third Proportional to 70,689 and 154,986

Step by Step Solution

1. Step 1: Write the proportion equation
   70,689 : 154,986 = 154,986 : x
2. Step 2: Convert to fraction form
   70,689/154,986 = 154,986/x
3. Step 3: Cross multiply
   70,689x = 154,986 × 154,986
4. Step 4: Simplify right side
   70,689x = 24,020,660,196
5. Step 5: Solve for x
   x = 24,020,660,196/70,689
6. Step 6: Final answer
   x = 339,807.61