Finding the Third Proportional to 658,778 and 1,438,028

Step by Step Solution

1. Step 1: Write the proportion equation
   658,778 : 1,438,028 = 1,438,028 : x
2. Step 2: Convert to fraction form
   658,778/1,438,028 = 1,438,028/x
3. Step 3: Cross multiply
   658,778x = 1,438,028 × 1,438,028
4. Step 4: Simplify right side
   658,778x = 2,067,924,528,784
5. Step 5: Solve for x
   x = 2,067,924,528,784/658,778
6. Step 6: Final answer
   x = 3,139,030.95