Finding the Third Proportional to 905,424 and 1,918,780

Step by Step Solution

1. Step 1: Write the proportion equation
   905,424 : 1,918,780 = 1,918,780 : x
2. Step 2: Convert to fraction form
   905,424/1,918,780 = 1,918,780/x
3. Step 3: Cross multiply
   905,424x = 1,918,780 × 1,918,780
4. Step 4: Simplify right side
   905,424x = 3,681,716,688,400
5. Step 5: Solve for x
   x = 3,681,716,688,400/905,424
6. Step 6: Final answer
   x = 4,066,290.15