Finding the Third Proportional to 813,396 and 1,260,986

Step by Step Solution

1. Step 1: Write the proportion equation
   813,396 : 1,260,986 = 1,260,986 : x
2. Step 2: Convert to fraction form
   813,396/1,260,986 = 1,260,986/x
3. Step 3: Cross multiply
   813,396x = 1,260,986 × 1,260,986
4. Step 4: Simplify right side
   813,396x = 1,590,085,692,196
5. Step 5: Solve for x
   x = 1,590,085,692,196/813,396
6. Step 6: Final answer
   x = 1,954,872.77