Finding the Third Proportional to 905,405 and 1,918,744

Step by Step Solution

1. Step 1: Write the proportion equation
   905,405 : 1,918,744 = 1,918,744 : x
2. Step 2: Convert to fraction form
   905,405/1,918,744 = 1,918,744/x
3. Step 3: Cross multiply
   905,405x = 1,918,744 × 1,918,744
4. Step 4: Simplify right side
   905,405x = 3,681,578,537,536
5. Step 5: Solve for x
   x = 3,681,578,537,536/905,405
6. Step 6: Final answer
   x = 4,066,222.89