Finding the Third Proportional to 555,120 and 1,309,996

Step by Step Solution

1. Step 1: Write the proportion equation
   555,120 : 1,309,996 = 1,309,996 : x
2. Step 2: Convert to fraction form
   555,120/1,309,996 = 1,309,996/x
3. Step 3: Cross multiply
   555,120x = 1,309,996 × 1,309,996
4. Step 4: Simplify right side
   555,120x = 1,716,089,520,016
5. Step 5: Solve for x
   x = 1,716,089,520,016/555,120
6. Step 6: Final answer
   x = 3,091,384.78