Finding the Third Proportional to 2,488,806 and 5,428,134

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488,806 : 5,428,134 = 5,428,134 : x
2. Step 2: Convert to fraction form
   2,488,806/5,428,134 = 5,428,134/x
3. Step 3: Cross multiply
   2,488,806x = 5,428,134 × 5,428,134
4. Step 4: Simplify right side
   2,488,806x = 29,464,638,721,956
5. Step 5: Solve for x
   x = 29,464,638,721,956/2,488,806
6. Step 6: Final answer
   x = 11,838,865.19