Finding the Third Proportional to 1,918,140 and 4,155,541

Step by Step Solution

1. Step 1: Write the proportion equation
   1,918,140 : 4,155,541 = 4,155,541 : x
2. Step 2: Convert to fraction form
   1,918,140/4,155,541 = 4,155,541/x
3. Step 3: Cross multiply
   1,918,140x = 4,155,541 × 4,155,541
4. Step 4: Simplify right side
   1,918,140x = 17,268,521,002,681
5. Step 5: Solve for x
   x = 17,268,521,002,681/1,918,140
6. Step 6: Final answer
   x = 9,002,742.76