Finding the Third Proportional to 812,785 and 1,786,456

Step by Step Solution

1. Step 1: Write the proportion equation
   812,785 : 1,786,456 = 1,786,456 : x
2. Step 2: Convert to fraction form
   812,785/1,786,456 = 1,786,456/x
3. Step 3: Cross multiply
   812,785x = 1,786,456 × 1,786,456
4. Step 4: Simplify right side
   812,785x = 3,191,425,039,936
5. Step 5: Solve for x
   x = 3,191,425,039,936/812,785
6. Step 6: Final answer
   x = 3,926,530.44