Finding the Third Proportional to 2,790,160 and 5,978,900

Step by Step Solution

1. Step 1: Write the proportion equation
   2,790,160 : 5,978,900 = 5,978,900 : x
2. Step 2: Convert to fraction form
   2,790,160/5,978,900 = 5,978,900/x
3. Step 3: Cross multiply
   2,790,160x = 5,978,900 × 5,978,900
4. Step 4: Simplify right side
   2,790,160x = 35,747,245,210,000
5. Step 5: Solve for x
   x = 35,747,245,210,000/2,790,160
6. Step 6: Final answer
   x = 12,811,897.96