Finding the Third Proportional to 636,507 and 1,391,112

Step by Step Solution

1. Step 1: Write the proportion equation
   636,507 : 1,391,112 = 1,391,112 : x
2. Step 2: Convert to fraction form
   636,507/1,391,112 = 1,391,112/x
3. Step 3: Cross multiply
   636,507x = 1,391,112 × 1,391,112
4. Step 4: Simplify right side
   636,507x = 1,935,192,596,544
5. Step 5: Solve for x
   x = 1,935,192,596,544/636,507
6. Step 6: Final answer
   x = 3,040,331.99