Finding the Third Proportional to 861,664 and 1,207,462

Step by Step Solution

1. Step 1: Write the proportion equation
   861,664 : 1,207,462 = 1,207,462 : x
2. Step 2: Convert to fraction form
   861,664/1,207,462 = 1,207,462/x
3. Step 3: Cross multiply
   861,664x = 1,207,462 × 1,207,462
4. Step 4: Simplify right side
   861,664x = 1,457,964,481,444
5. Step 5: Solve for x
   x = 1,457,964,481,444/861,664
6. Step 6: Final answer
   x = 1,692,033.65