Finding the Third Proportional to 1,686,176 and 2,571,280

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686,176 : 2,571,280 = 2,571,280 : x
2. Step 2: Convert to fraction form
   1,686,176/2,571,280 = 2,571,280/x
3. Step 3: Cross multiply
   1,686,176x = 2,571,280 × 2,571,280
4. Step 4: Simplify right side
   1,686,176x = 6,611,480,838,400
5. Step 5: Solve for x
   x = 6,611,480,838,400/1,686,176
6. Step 6: Final answer
   x = 3,920,990.95