Finding the Third Proportional to 748,686 and 1,637,340

Step by Step Solution

1. Step 1: Write the proportion equation
   748,686 : 1,637,340 = 1,637,340 : x
2. Step 2: Convert to fraction form
   748,686/1,637,340 = 1,637,340/x
3. Step 3: Cross multiply
   748,686x = 1,637,340 × 1,637,340
4. Step 4: Simplify right side
   748,686x = 2,680,882,275,600
5. Step 5: Solve for x
   x = 2,680,882,275,600/748,686
6. Step 6: Final answer
   x = 3,580,783.23