Finding the Third Proportional to 2,442,642 and 5,209,905

Step by Step Solution

1. Step 1: Write the proportion equation
   2,442,642 : 5,209,905 = 5,209,905 : x
2. Step 2: Convert to fraction form
   2,442,642/5,209,905 = 5,209,905/x
3. Step 3: Cross multiply
   2,442,642x = 5,209,905 × 5,209,905
4. Step 4: Simplify right side
   2,442,642x = 27,143,110,109,025
5. Step 5: Solve for x
   x = 27,143,110,109,025/2,442,642
6. Step 6: Final answer
   x = 11,112,193.32