Finding the Third Proportional to 1,226,564 and 2,681,128

Step by Step Solution

1. Step 1: Write the proportion equation
   1,226,564 : 2,681,128 = 2,681,128 : x
2. Step 2: Convert to fraction form
   1,226,564/2,681,128 = 2,681,128/x
3. Step 3: Cross multiply
   1,226,564x = 2,681,128 × 2,681,128
4. Step 4: Simplify right side
   1,226,564x = 7,188,447,352,384
5. Step 5: Solve for x
   x = 7,188,447,352,384/1,226,564
6. Step 6: Final answer
   x = 5,860,637.81