Finding the Third Proportional to 1,386,839 and 2,983,630

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386,839 : 2,983,630 = 2,983,630 : x
2. Step 2: Convert to fraction form
   1,386,839/2,983,630 = 2,983,630/x
3. Step 3: Cross multiply
   1,386,839x = 2,983,630 × 2,983,630
4. Step 4: Simplify right side
   1,386,839x = 8,902,047,976,900
5. Step 5: Solve for x
   x = 8,902,047,976,900/1,386,839
6. Step 6: Final answer
   x = 6,418,948.40