Finding the Third Proportional to 910,402 and 1,406,669

Step by Step Solution

1. Step 1: Write the proportion equation
   910,402 : 1,406,669 = 1,406,669 : x
2. Step 2: Convert to fraction form
   910,402/1,406,669 = 1,406,669/x
3. Step 3: Cross multiply
   910,402x = 1,406,669 × 1,406,669
4. Step 4: Simplify right side
   910,402x = 1,978,717,675,561
5. Step 5: Solve for x
   x = 1,978,717,675,561/910,402
6. Step 6: Final answer
   x = 2,173,454.89