Finding the Third Proportional to 679,072 and 1,439,092

Step by Step Solution

1. Step 1: Write the proportion equation
   679,072 : 1,439,092 = 1,439,092 : x
2. Step 2: Convert to fraction form
   679,072/1,439,092 = 1,439,092/x
3. Step 3: Cross multiply
   679,072x = 1,439,092 × 1,439,092
4. Step 4: Simplify right side
   679,072x = 2,070,985,784,464
5. Step 5: Solve for x
   x = 2,070,985,784,464/679,072
6. Step 6: Final answer
   x = 3,049,729.31