Finding the Third Proportional to 812,896 and 1,786,680

Step by Step Solution

1. Step 1: Write the proportion equation
   812,896 : 1,786,680 = 1,786,680 : x
2. Step 2: Convert to fraction form
   812,896/1,786,680 = 1,786,680/x
3. Step 3: Cross multiply
   812,896x = 1,786,680 × 1,786,680
4. Step 4: Simplify right side
   812,896x = 3,192,225,422,400
5. Step 5: Solve for x
   x = 3,192,225,422,400/812,896
6. Step 6: Final answer
   x = 3,926,978.88