Finding the Third Proportional to 489,040 and 1,071,392

Step by Step Solution

1. Step 1: Write the proportion equation
   489,040 : 1,071,392 = 1,071,392 : x
2. Step 2: Convert to fraction form
   489,040/1,071,392 = 1,071,392/x
3. Step 3: Cross multiply
   489,040x = 1,071,392 × 1,071,392
4. Step 4: Simplify right side
   489,040x = 1,147,880,817,664
5. Step 5: Solve for x
   x = 1,147,880,817,664/489,040
6. Step 6: Final answer
   x = 2,347,212.53