Finding the Third Proportional to 1,038,980 and 1,407,942

Step by Step Solution

1. Step 1: Write the proportion equation
   1,038,980 : 1,407,942 = 1,407,942 : x
2. Step 2: Convert to fraction form
   1,038,980/1,407,942 = 1,407,942/x
3. Step 3: Cross multiply
   1,038,980x = 1,407,942 × 1,407,942
4. Step 4: Simplify right side
   1,038,980x = 1,982,300,675,364
5. Step 5: Solve for x
   x = 1,982,300,675,364/1,038,980
6. Step 6: Final answer
   x = 1,907,929.58