Finding the Third Proportional to 2,578,212 and 5,529,480

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,212 : 5,529,480 = 5,529,480 : x
2. Step 2: Convert to fraction form
   2,578,212/5,529,480 = 5,529,480/x
3. Step 3: Cross multiply
   2,578,212x = 5,529,480 × 5,529,480
4. Step 4: Simplify right side
   2,578,212x = 30,575,149,070,400
5. Step 5: Solve for x
   x = 30,575,149,070,400/2,578,212
6. Step 6: Final answer
   x = 11,859,051.57