Finding the Third Proportional to 1,028,792 and 1,387,789

Step by Step Solution

1. Step 1: Write the proportion equation
   1,028,792 : 1,387,789 = 1,387,789 : x
2. Step 2: Convert to fraction form
   1,028,792/1,387,789 = 1,387,789/x
3. Step 3: Cross multiply
   1,028,792x = 1,387,789 × 1,387,789
4. Step 4: Simplify right side
   1,028,792x = 1,925,958,308,521
5. Step 5: Solve for x
   x = 1,925,958,308,521/1,028,792
6. Step 6: Final answer
   x = 1,872,058.01