Finding the Third Proportional to 864,354 and 1,308,456

Step by Step Solution

1. Step 1: Write the proportion equation
   864,354 : 1,308,456 = 1,308,456 : x
2. Step 2: Convert to fraction form
   864,354/1,308,456 = 1,308,456/x
3. Step 3: Cross multiply
   864,354x = 1,308,456 × 1,308,456
4. Step 4: Simplify right side
   864,354x = 1,712,057,103,936
5. Step 5: Solve for x
   x = 1,712,057,103,936/864,354
6. Step 6: Final answer
   x = 1,980,736.02