Finding the Third Proportional to 866,610 and 1,339,255

Step by Step Solution

1. Step 1: Write the proportion equation
   866,610 : 1,339,255 = 1,339,255 : x
2. Step 2: Convert to fraction form
   866,610/1,339,255 = 1,339,255/x
3. Step 3: Cross multiply
   866,610x = 1,339,255 × 1,339,255
4. Step 4: Simplify right side
   866,610x = 1,793,603,955,025
5. Step 5: Solve for x
   x = 1,793,603,955,025/866,610
6. Step 6: Final answer
   x = 2,069,678.35