Finding the Third Proportional to 417,069 and 863,682.75

Step by Step Solution

1. Step 1: Write the proportion equation
   417,069 : 863,682.75 = 863,682.75 : x
2. Step 2: Convert to fraction form
   417,069/863,682.75 = 863,682.75/x
3. Step 3: Cross multiply
   417,069x = 863,682.75 × 863,682.75
4. Step 4: Simplify right side
   417,069x = 745,947,892,647.56
5. Step 5: Solve for x
   x = 745,947,892,647.56/417,069
6. Step 6: Final answer
   x = 1,788,547.92