Finding the Third Proportional to 1,490,080 and 3,218,240

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490,080 : 3,218,240 = 3,218,240 : x
2. Step 2: Convert to fraction form
   1,490,080/3,218,240 = 3,218,240/x
3. Step 3: Cross multiply
   1,490,080x = 3,218,240 × 3,218,240
4. Step 4: Simplify right side
   1,490,080x = 10,357,068,697,600
5. Step 5: Solve for x
   x = 10,357,068,697,600/1,490,080
6. Step 6: Final answer
   x = 6,950,679.63