Finding the Third Proportional to 1,986,458 and 4,287,844

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986,458 : 4,287,844 = 4,287,844 : x
2. Step 2: Convert to fraction form
   1,986,458/4,287,844 = 4,287,844/x
3. Step 3: Cross multiply
   1,986,458x = 4,287,844 × 4,287,844
4. Step 4: Simplify right side
   1,986,458x = 18,385,606,168,336
5. Step 5: Solve for x
   x = 18,385,606,168,336/1,986,458
6. Step 6: Final answer
   x = 9,255,471.88