Finding the Third Proportional to 656,440 and 1,406,192

Step by Step Solution

1. Step 1: Write the proportion equation
   656,440 : 1,406,192 = 1,406,192 : x
2. Step 2: Convert to fraction form
   656,440/1,406,192 = 1,406,192/x
3. Step 3: Cross multiply
   656,440x = 1,406,192 × 1,406,192
4. Step 4: Simplify right side
   656,440x = 1,977,375,940,864
5. Step 5: Solve for x
   x = 1,977,375,940,864/656,440
6. Step 6: Final answer
   x = 3,012,272.17