Finding the Third Proportional to 35,914 and 78,686

Step by Step Solution

1. Step 1: Write the proportion equation
   35,914 : 78,686 = 78,686 : x
2. Step 2: Convert to fraction form
   35,914/78,686 = 78,686/x
3. Step 3: Cross multiply
   35,914x = 78,686 × 78,686
4. Step 4: Simplify right side
   35,914x = 6,191,486,596
5. Step 5: Solve for x
   x = 6,191,486,596/35,914
6. Step 6: Final answer
   x = 172,397.58