Finding the Third Proportional to 1,663,972 and 2,569,320

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663,972 : 2,569,320 = 2,569,320 : x
2. Step 2: Convert to fraction form
   1,663,972/2,569,320 = 2,569,320/x
3. Step 3: Cross multiply
   1,663,972x = 2,569,320 × 2,569,320
4. Step 4: Simplify right side
   1,663,972x = 6,601,405,262,400
5. Step 5: Solve for x
   x = 6,601,405,262,400/1,663,972
6. Step 6: Final answer
   x = 3,967,257.42