Finding the Third Proportional to 658,985 and 1,438,822

Step by Step Solution

1. Step 1: Write the proportion equation
   658,985 : 1,438,822 = 1,438,822 : x
2. Step 2: Convert to fraction form
   658,985/1,438,822 = 1,438,822/x
3. Step 3: Cross multiply
   658,985x = 1,438,822 × 1,438,822
4. Step 4: Simplify right side
   658,985x = 2,070,208,747,684
5. Step 5: Solve for x
   x = 2,070,208,747,684/658,985
6. Step 6: Final answer
   x = 3,141,511.18