Finding the Third Proportional to 766,908 and 1,200,420

Step by Step Solution

1. Step 1: Write the proportion equation
   766,908 : 1,200,420 = 1,200,420 : x
2. Step 2: Convert to fraction form
   766,908/1,200,420 = 1,200,420/x
3. Step 3: Cross multiply
   766,908x = 1,200,420 × 1,200,420
4. Step 4: Simplify right side
   766,908x = 1,441,008,176,400
5. Step 5: Solve for x
   x = 1,441,008,176,400/766,908
6. Step 6: Final answer
   x = 1,878,984.41