Finding the Third Proportional to 1,299,057 and 2,016,368

Step by Step Solution

1. Step 1: Write the proportion equation
   1,299,057 : 2,016,368 = 2,016,368 : x
2. Step 2: Convert to fraction form
   1,299,057/2,016,368 = 2,016,368/x
3. Step 3: Cross multiply
   1,299,057x = 2,016,368 × 2,016,368
4. Step 4: Simplify right side
   1,299,057x = 4,065,739,911,424
5. Step 5: Solve for x
   x = 4,065,739,911,424/1,299,057
6. Step 6: Final answer
   x = 3,129,762.52