Finding the Third Proportional to 658,886 and 1,438,600

Step by Step Solution

1. Step 1: Write the proportion equation
   658,886 : 1,438,600 = 1,438,600 : x
2. Step 2: Convert to fraction form
   658,886/1,438,600 = 1,438,600/x
3. Step 3: Cross multiply
   658,886x = 1,438,600 × 1,438,600
4. Step 4: Simplify right side
   658,886x = 2,069,569,960,000
5. Step 5: Solve for x
   x = 2,069,569,960,000/658,886
6. Step 6: Final answer
   x = 3,141,013.71