Finding the Third Proportional to 876,429 and 1,320,411

Step by Step Solution

1. Step 1: Write the proportion equation
   876,429 : 1,320,411 = 1,320,411 : x
2. Step 2: Convert to fraction form
   876,429/1,320,411 = 1,320,411/x
3. Step 3: Cross multiply
   876,429x = 1,320,411 × 1,320,411
4. Step 4: Simplify right side
   876,429x = 1,743,485,208,921
5. Step 5: Solve for x
   x = 1,743,485,208,921/876,429
6. Step 6: Final answer
   x = 1,989,305.70