Finding the Third Proportional to 384,212 and 843,156

Step by Step Solution

1. Step 1: Write the proportion equation
   384,212 : 843,156 = 843,156 : x
2. Step 2: Convert to fraction form
   384,212/843,156 = 843,156/x
3. Step 3: Cross multiply
   384,212x = 843,156 × 843,156
4. Step 4: Simplify right side
   384,212x = 710,912,040,336
5. Step 5: Solve for x
   x = 710,912,040,336/384,212
6. Step 6: Final answer
   x = 1,850,311.91