Finding the Third Proportional to 658,804 and 1,438,080

Step by Step Solution

1. Step 1: Write the proportion equation
   658,804 : 1,438,080 = 1,438,080 : x
2. Step 2: Convert to fraction form
   658,804/1,438,080 = 1,438,080/x
3. Step 3: Cross multiply
   658,804x = 1,438,080 × 1,438,080
4. Step 4: Simplify right side
   658,804x = 2,068,074,086,400
5. Step 5: Solve for x
   x = 2,068,074,086,400/658,804
6. Step 6: Final answer
   x = 3,139,134.08