Finding the Third Proportional to 1,386,840 and 2,983,632

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386,840 : 2,983,632 = 2,983,632 : x
2. Step 2: Convert to fraction form
   1,386,840/2,983,632 = 2,983,632/x
3. Step 3: Cross multiply
   1,386,840x = 2,983,632 × 2,983,632
4. Step 4: Simplify right side
   1,386,840x = 8,902,059,911,424
5. Step 5: Solve for x
   x = 8,902,059,911,424/1,386,840
6. Step 6: Final answer
   x = 6,418,952.37