Finding the Third Proportional to 1,636,416 and 3,500,280

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636,416 : 3,500,280 = 3,500,280 : x
2. Step 2: Convert to fraction form
   1,636,416/3,500,280 = 3,500,280/x
3. Step 3: Cross multiply
   1,636,416x = 3,500,280 × 3,500,280
4. Step 4: Simplify right side
   1,636,416x = 12,251,960,078,400
5. Step 5: Solve for x
   x = 12,251,960,078,400/1,636,416
6. Step 6: Final answer
   x = 7,487,069.35