Finding the Third Proportional to 1,918,659 and 4,155,270

Step by Step Solution

1. Step 1: Write the proportion equation
   1,918,659 : 4,155,270 = 4,155,270 : x
2. Step 2: Convert to fraction form
   1,918,659/4,155,270 = 4,155,270/x
3. Step 3: Cross multiply
   1,918,659x = 4,155,270 × 4,155,270
4. Step 4: Simplify right side
   1,918,659x = 17,266,268,772,900
5. Step 5: Solve for x
   x = 17,266,268,772,900/1,918,659
6. Step 6: Final answer
   x = 8,999,133.65