Finding the Third Proportional to 876,423 and 1,320,402

Step by Step Solution

1. Step 1: Write the proportion equation
   876,423 : 1,320,402 = 1,320,402 : x
2. Step 2: Convert to fraction form
   876,423/1,320,402 = 1,320,402/x
3. Step 3: Cross multiply
   876,423x = 1,320,402 × 1,320,402
4. Step 4: Simplify right side
   876,423x = 1,743,461,441,604
5. Step 5: Solve for x
   x = 1,743,461,441,604/876,423
6. Step 6: Final answer
   x = 1,989,292.20