Finding the Third Proportional to 63,434 and 88,686

Step by Step Solution

1. Step 1: Write the proportion equation
   63,434 : 88,686 = 88,686 : x
2. Step 2: Convert to fraction form
   63,434/88,686 = 88,686/x
3. Step 3: Cross multiply
   63,434x = 88,686 × 88,686
4. Step 4: Simplify right side
   63,434x = 7,865,206,596
5. Step 5: Solve for x
   x = 7,865,206,596/63,434
6. Step 6: Final answer
   x = 123,990.39