Finding the Third Proportional to 1,638,936 and 2,565,334

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638,936 : 2,565,334 = 2,565,334 : x
2. Step 2: Convert to fraction form
   1,638,936/2,565,334 = 2,565,334/x
3. Step 3: Cross multiply
   1,638,936x = 2,565,334 × 2,565,334
4. Step 4: Simplify right side
   1,638,936x = 6,580,938,531,556
5. Step 5: Solve for x
   x = 6,580,938,531,556/1,638,936
6. Step 6: Final answer
   x = 4,015,372.49