Finding the Third Proportional to 3,978,090 and 6,118,155

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978,090 : 6,118,155 = 6,118,155 : x
2. Step 2: Convert to fraction form
   3,978,090/6,118,155 = 6,118,155/x
3. Step 3: Cross multiply
   3,978,090x = 6,118,155 × 6,118,155
4. Step 4: Simplify right side
   3,978,090x = 37,431,820,604,025
5. Step 5: Solve for x
   x = 37,431,820,604,025/3,978,090
6. Step 6: Final answer
   x = 9,409,495.66