Finding the Third Proportional to 748,509 and 1,636,986

Step by Step Solution

1. Step 1: Write the proportion equation
   748,509 : 1,636,986 = 1,636,986 : x
2. Step 2: Convert to fraction form
   748,509/1,636,986 = 1,636,986/x
3. Step 3: Cross multiply
   748,509x = 1,636,986 × 1,636,986
4. Step 4: Simplify right side
   748,509x = 2,679,723,164,196
5. Step 5: Solve for x
   x = 2,679,723,164,196/748,509
6. Step 6: Final answer
   x = 3,580,081.42