Finding the Third Proportional to 2,538,406 and 5,539,840

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538,406 : 5,539,840 = 5,539,840 : x
2. Step 2: Convert to fraction form
   2,538,406/5,539,840 = 5,539,840/x
3. Step 3: Cross multiply
   2,538,406x = 5,539,840 × 5,539,840
4. Step 4: Simplify right side
   2,538,406x = 30,689,827,225,600
5. Step 5: Solve for x
   x = 30,689,827,225,600/2,538,406
6. Step 6: Final answer
   x = 12,090,196.46