Finding the Third Proportional to 578,691 and 1,267,714

Step by Step Solution

1. Step 1: Write the proportion equation
   578,691 : 1,267,714 = 1,267,714 : x
2. Step 2: Convert to fraction form
   578,691/1,267,714 = 1,267,714/x
3. Step 3: Cross multiply
   578,691x = 1,267,714 × 1,267,714
4. Step 4: Simplify right side
   578,691x = 1,607,098,785,796
5. Step 5: Solve for x
   x = 1,607,098,785,796/578,691
6. Step 6: Final answer
   x = 2,777,127.67