Finding the Third Proportional to 851,618 and 1,335,939

Step by Step Solution

1. Step 1: Write the proportion equation
   851,618 : 1,335,939 = 1,335,939 : x
2. Step 2: Convert to fraction form
   851,618/1,335,939 = 1,335,939/x
3. Step 3: Cross multiply
   851,618x = 1,335,939 × 1,335,939
4. Step 4: Simplify right side
   851,618x = 1,784,733,011,721
5. Step 5: Solve for x
   x = 1,784,733,011,721/851,618
6. Step 6: Final answer
   x = 2,095,696.68