Finding the Third Proportional to 990,196 and 2,165,864

Step by Step Solution

1. Step 1: Write the proportion equation
   990,196 : 2,165,864 = 2,165,864 : x
2. Step 2: Convert to fraction form
   990,196/2,165,864 = 2,165,864/x
3. Step 3: Cross multiply
   990,196x = 2,165,864 × 2,165,864
4. Step 4: Simplify right side
   990,196x = 4,690,966,866,496
5. Step 5: Solve for x
   x = 4,690,966,866,496/990,196
6. Step 6: Final answer
   x = 4,737,412.46