Finding the Third Proportional to 389,108 and 852,030

Step by Step Solution

1. Step 1: Write the proportion equation
   389,108 : 852,030 = 852,030 : x
2. Step 2: Convert to fraction form
   389,108/852,030 = 852,030/x
3. Step 3: Cross multiply
   389,108x = 852,030 × 852,030
4. Step 4: Simplify right side
   389,108x = 725,955,120,900
5. Step 5: Solve for x
   x = 725,955,120,900/389,108
6. Step 6: Final answer
   x = 1,865,690.56