Finding the Third Proportional to 658,964 and 1,438,780

Step by Step Solution

1. Step 1: Write the proportion equation
   658,964 : 1,438,780 = 1,438,780 : x
2. Step 2: Convert to fraction form
   658,964/1,438,780 = 1,438,780/x
3. Step 3: Cross multiply
   658,964x = 1,438,780 × 1,438,780
4. Step 4: Simplify right side
   658,964x = 2,070,087,888,400
5. Step 5: Solve for x
   x = 2,070,087,888,400/658,964
6. Step 6: Final answer
   x = 3,141,427.89