Finding the Third Proportional to 1,386,342 and 2,978,964

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386,342 : 2,978,964 = 2,978,964 : x
2. Step 2: Convert to fraction form
   1,386,342/2,978,964 = 2,978,964/x
3. Step 3: Cross multiply
   1,386,342x = 2,978,964 × 2,978,964
4. Step 4: Simplify right side
   1,386,342x = 8,874,226,513,296
5. Step 5: Solve for x
   x = 8,874,226,513,296/1,386,342
6. Step 6: Final answer
   x = 6,401,181.32