Finding the Third Proportional to 688,878 and 1,012,905

Step by Step Solution

1. Step 1: Write the proportion equation
   688,878 : 1,012,905 = 1,012,905 : x
2. Step 2: Convert to fraction form
   688,878/1,012,905 = 1,012,905/x
3. Step 3: Cross multiply
   688,878x = 1,012,905 × 1,012,905
4. Step 4: Simplify right side
   688,878x = 1,025,976,539,025
5. Step 5: Solve for x
   x = 1,025,976,539,025/688,878
6. Step 6: Final answer
   x = 1,489,344.32