Finding the Third Proportional to 806,820 and 1,249,245

Step by Step Solution

1. Step 1: Write the proportion equation
   806,820 : 1,249,245 = 1,249,245 : x
2. Step 2: Convert to fraction form
   806,820/1,249,245 = 1,249,245/x
3. Step 3: Cross multiply
   806,820x = 1,249,245 × 1,249,245
4. Step 4: Simplify right side
   806,820x = 1,560,613,070,025
5. Step 5: Solve for x
   x = 1,560,613,070,025/806,820
6. Step 6: Final answer
   x = 1,934,276.63