Finding the Third Proportional to 1,037,040 and 1,393,680

Step by Step Solution

1. Step 1: Write the proportion equation
   1,037,040 : 1,393,680 = 1,393,680 : x
2. Step 2: Convert to fraction form
   1,037,040/1,393,680 = 1,393,680/x
3. Step 3: Cross multiply
   1,037,040x = 1,393,680 × 1,393,680
4. Step 4: Simplify right side
   1,037,040x = 1,942,343,942,400
5. Step 5: Solve for x
   x = 1,942,343,942,400/1,037,040
6. Step 6: Final answer
   x = 1,872,969.16