Finding the Third Proportional to 812,956 and 1,207,643

Step by Step Solution

1. Step 1: Write the proportion equation
   812,956 : 1,207,643 = 1,207,643 : x
2. Step 2: Convert to fraction form
   812,956/1,207,643 = 1,207,643/x
3. Step 3: Cross multiply
   812,956x = 1,207,643 × 1,207,643
4. Step 4: Simplify right side
   812,956x = 1,458,401,615,449
5. Step 5: Solve for x
   x = 1,458,401,615,449/812,956
6. Step 6: Final answer
   x = 1,793,949.02