Finding the Third Proportional to 766,910 and 1,200,423

Step by Step Solution

1. Step 1: Write the proportion equation
   766,910 : 1,200,423 = 1,200,423 : x
2. Step 2: Convert to fraction form
   766,910/1,200,423 = 1,200,423/x
3. Step 3: Cross multiply
   766,910x = 1,200,423 × 1,200,423
4. Step 4: Simplify right side
   766,910x = 1,441,015,378,929
5. Step 5: Solve for x
   x = 1,441,015,378,929/766,910
6. Step 6: Final answer
   x = 1,878,988.90