Finding the Third Proportional to 858,624 and 1,864,920

Step by Step Solution

1. Step 1: Write the proportion equation
   858,624 : 1,864,920 = 1,864,920 : x
2. Step 2: Convert to fraction form
   858,624/1,864,920 = 1,864,920/x
3. Step 3: Cross multiply
   858,624x = 1,864,920 × 1,864,920
4. Step 4: Simplify right side
   858,624x = 3,477,926,606,400
5. Step 5: Solve for x
   x = 3,477,926,606,400/858,624
6. Step 6: Final answer
   x = 4,050,581.64