Finding the Third Proportional to 878,729 and 1,406,538

Step by Step Solution

1. Step 1: Write the proportion equation
   878,729 : 1,406,538 = 1,406,538 : x
2. Step 2: Convert to fraction form
   878,729/1,406,538 = 1,406,538/x
3. Step 3: Cross multiply
   878,729x = 1,406,538 × 1,406,538
4. Step 4: Simplify right side
   878,729x = 1,978,349,145,444
5. Step 5: Solve for x
   x = 1,978,349,145,444/878,729
6. Step 6: Final answer
   x = 2,251,375.73