Finding the Third Proportional to 2,543,631 and 5,390,526

Step by Step Solution

1. Step 1: Write the proportion equation
   2,543,631 : 5,390,526 = 5,390,526 : x
2. Step 2: Convert to fraction form
   2,543,631/5,390,526 = 5,390,526/x
3. Step 3: Cross multiply
   2,543,631x = 5,390,526 × 5,390,526
4. Step 4: Simplify right side
   2,543,631x = 29,057,770,556,676
5. Step 5: Solve for x
   x = 29,057,770,556,676/2,543,631
6. Step 6: Final answer
   x = 11,423,736.60