Finding the Third Proportional to 748,958 and 1,638,040

Step by Step Solution

1. Step 1: Write the proportion equation
   748,958 : 1,638,040 = 1,638,040 : x
2. Step 2: Convert to fraction form
   748,958/1,638,040 = 1,638,040/x
3. Step 3: Cross multiply
   748,958x = 1,638,040 × 1,638,040
4. Step 4: Simplify right side
   748,958x = 2,683,175,041,600
5. Step 5: Solve for x
   x = 2,683,175,041,600/748,958
6. Step 6: Final answer
   x = 3,582,544.07