Finding the Third Proportional to 555,300.56 and 839,785.22

Step by Step Solution

1. Step 1: Write the proportion equation
   555,300.56 : 839,785.22 = 839,785.22 : x
2. Step 2: Convert to fraction form
   555,300.56/839,785.22 = 839,785.22/x
3. Step 3: Cross multiply
   555,300.56x = 839,785.22 × 839,785.22
4. Step 4: Simplify right side
   555,300.56x = 705,239,213,630.99
5. Step 5: Solve for x
   x = 705,239,213,630.99/555,300.56
6. Step 6: Final answer
   x = 1,270,013.50