Finding the Third Proportional to 812,787 and 1,786,460

Step by Step Solution

1. Step 1: Write the proportion equation
   812,787 : 1,786,460 = 1,786,460 : x
2. Step 2: Convert to fraction form
   812,787/1,786,460 = 1,786,460/x
3. Step 3: Cross multiply
   812,787x = 1,786,460 × 1,786,460
4. Step 4: Simplify right side
   812,787x = 3,191,439,331,600
5. Step 5: Solve for x
   x = 3,191,439,331,600/812,787
6. Step 6: Final answer
   x = 3,926,538.36