Finding the Third Proportional to 509,120 and 1,005,388

Step by Step Solution

1. Step 1: Write the proportion equation
   509,120 : 1,005,388 = 1,005,388 : x
2. Step 2: Convert to fraction form
   509,120/1,005,388 = 1,005,388/x
3. Step 3: Cross multiply
   509,120x = 1,005,388 × 1,005,388
4. Step 4: Simplify right side
   509,120x = 1,010,805,030,544
5. Step 5: Solve for x
   x = 1,010,805,030,544/509,120
6. Step 6: Final answer
   x = 1,985,396.43