Finding the Third Proportional to 864,984 and 1,377,420

Step by Step Solution

1. Step 1: Write the proportion equation
   864,984 : 1,377,420 = 1,377,420 : x
2. Step 2: Convert to fraction form
   864,984/1,377,420 = 1,377,420/x
3. Step 3: Cross multiply
   864,984x = 1,377,420 × 1,377,420
4. Step 4: Simplify right side
   864,984x = 1,897,285,856,400
5. Step 5: Solve for x
   x = 1,897,285,856,400/864,984
6. Step 6: Final answer
   x = 2,193,434.63