Finding the Third Proportional to 900,705 and 1,978,554

Step by Step Solution

1. Step 1: Write the proportion equation
   900,705 : 1,978,554 = 1,978,554 : x
2. Step 2: Convert to fraction form
   900,705/1,978,554 = 1,978,554/x
3. Step 3: Cross multiply
   900,705x = 1,978,554 × 1,978,554
4. Step 4: Simplify right side
   900,705x = 3,914,675,930,916
5. Step 5: Solve for x
   x = 3,914,675,930,916/900,705
6. Step 6: Final answer
   x = 4,346,235.37