Finding the Third Proportional to 776,739 and 1,665,366

Step by Step Solution

1. Step 1: Write the proportion equation
   776,739 : 1,665,366 = 1,665,366 : x
2. Step 2: Convert to fraction form
   776,739/1,665,366 = 1,665,366/x
3. Step 3: Cross multiply
   776,739x = 1,665,366 × 1,665,366
4. Step 4: Simplify right side
   776,739x = 2,773,443,913,956
5. Step 5: Solve for x
   x = 2,773,443,913,956/776,739
6. Step 6: Final answer
   x = 3,570,625.29