Finding the Third Proportional to 666,728 and 1,059,146

Step by Step Solution

1. Step 1: Write the proportion equation
   666,728 : 1,059,146 = 1,059,146 : x
2. Step 2: Convert to fraction form
   666,728/1,059,146 = 1,059,146/x
3. Step 3: Cross multiply
   666,728x = 1,059,146 × 1,059,146
4. Step 4: Simplify right side
   666,728x = 1,121,790,249,316
5. Step 5: Solve for x
   x = 1,121,790,249,316/666,728
6. Step 6: Final answer
   x = 1,682,530.58