Finding the Third Proportional to 1,584,480 and 3,421,456

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584,480 : 3,421,456 = 3,421,456 : x
2. Step 2: Convert to fraction form
   1,584,480/3,421,456 = 3,421,456/x
3. Step 3: Cross multiply
   1,584,480x = 3,421,456 × 3,421,456
4. Step 4: Simplify right side
   1,584,480x = 11,706,361,159,936
5. Step 5: Solve for x
   x = 11,706,361,159,936/1,584,480
6. Step 6: Final answer
   x = 7,388,140.69