Finding the Third Proportional to 715,426 and 1,555,099

Step by Step Solution

1. Step 1: Write the proportion equation
   715,426 : 1,555,099 = 1,555,099 : x
2. Step 2: Convert to fraction form
   715,426/1,555,099 = 1,555,099/x
3. Step 3: Cross multiply
   715,426x = 1,555,099 × 1,555,099
4. Step 4: Simplify right side
   715,426x = 2,418,332,899,801
5. Step 5: Solve for x
   x = 2,418,332,899,801/715,426
6. Step 6: Final answer
   x = 3,380,269.80