Finding the Third Proportional to 2,619,657 and 5,637,699

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619,657 : 5,637,699 = 5,637,699 : x
2. Step 2: Convert to fraction form
   2,619,657/5,637,699 = 5,637,699/x
3. Step 3: Cross multiply
   2,619,657x = 5,637,699 × 5,637,699
4. Step 4: Simplify right side
   2,619,657x = 31,783,650,014,601
5. Step 5: Solve for x
   x = 31,783,650,014,601/2,619,657
6. Step 6: Final answer
   x = 12,132,752.50