Finding the Third Proportional to 391,184 and 857,030

Step by Step Solution

1. Step 1: Write the proportion equation
   391,184 : 857,030 = 857,030 : x
2. Step 2: Convert to fraction form
   391,184/857,030 = 857,030/x
3. Step 3: Cross multiply
   391,184x = 857,030 × 857,030
4. Step 4: Simplify right side
   391,184x = 734,500,420,900
5. Step 5: Solve for x
   x = 734,500,420,900/391,184
6. Step 6: Final answer
   x = 1,877,634.11