Finding the Third Proportional to 1,236,570 and 2,684,638

Step by Step Solution

1. Step 1: Write the proportion equation
   1,236,570 : 2,684,638 = 2,684,638 : x
2. Step 2: Convert to fraction form
   1,236,570/2,684,638 = 2,684,638/x
3. Step 3: Cross multiply
   1,236,570x = 2,684,638 × 2,684,638
4. Step 4: Simplify right side
   1,236,570x = 7,207,281,191,044
5. Step 5: Solve for x
   x = 7,207,281,191,044/1,236,570
6. Step 6: Final answer
   x = 5,828,445.77