Finding the Third Proportional to 786,404 and 1,684,858

Step by Step Solution

1. Step 1: Write the proportion equation
   786,404 : 1,684,858 = 1,684,858 : x
2. Step 2: Convert to fraction form
   786,404/1,684,858 = 1,684,858/x
3. Step 3: Cross multiply
   786,404x = 1,684,858 × 1,684,858
4. Step 4: Simplify right side
   786,404x = 2,838,746,480,164
5. Step 5: Solve for x
   x = 2,838,746,480,164/786,404
6. Step 6: Final answer
   x = 3,609,781.33