Finding the Third Proportional to 2,573,820 and 5,489,631

Step by Step Solution

1. Step 1: Write the proportion equation
   2,573,820 : 5,489,631 = 5,489,631 : x
2. Step 2: Convert to fraction form
   2,573,820/5,489,631 = 5,489,631/x
3. Step 3: Cross multiply
   2,573,820x = 5,489,631 × 5,489,631
4. Step 4: Simplify right side
   2,573,820x = 30,136,048,516,161
5. Step 5: Solve for x
   x = 30,136,048,516,161/2,573,820
6. Step 6: Final answer
   x = 11,708,685.35