Finding the Third Proportional to 186,860 and 438,682

Step by Step Solution

1. Step 1: Write the proportion equation
   186,860 : 438,682 = 438,682 : x
2. Step 2: Convert to fraction form
   186,860/438,682 = 438,682/x
3. Step 3: Cross multiply
   186,860x = 438,682 × 438,682
4. Step 4: Simplify right side
   186,860x = 192,441,897,124
5. Step 5: Solve for x
   x = 192,441,897,124/186,860
6. Step 6: Final answer
   x = 1,029,872.08