Finding the Third Proportional to 780,247 and 1,671,086

Step by Step Solution

1. Step 1: Write the proportion equation
   780,247 : 1,671,086 = 1,671,086 : x
2. Step 2: Convert to fraction form
   780,247/1,671,086 = 1,671,086/x
3. Step 3: Cross multiply
   780,247x = 1,671,086 × 1,671,086
4. Step 4: Simplify right side
   780,247x = 2,792,528,419,396
5. Step 5: Solve for x
   x = 2,792,528,419,396/780,247
6. Step 6: Final answer
   x = 3,579,031.28