Finding the Third Proportional to 1,306,638 and 1,959,969

Step by Step Solution

1. Step 1: Write the proportion equation
   1,306,638 : 1,959,969 = 1,959,969 : x
2. Step 2: Convert to fraction form
   1,306,638/1,959,969 = 1,959,969/x
3. Step 3: Cross multiply
   1,306,638x = 1,959,969 × 1,959,969
4. Step 4: Simplify right side
   1,306,638x = 3,841,478,480,961
5. Step 5: Solve for x
   x = 3,841,478,480,961/1,306,638
6. Step 6: Final answer
   x = 2,939,971.50