Finding the Third Proportional to 1,636,128 and 3,499,680

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636,128 : 3,499,680 = 3,499,680 : x
2. Step 2: Convert to fraction form
   1,636,128/3,499,680 = 3,499,680/x
3. Step 3: Cross multiply
   1,636,128x = 3,499,680 × 3,499,680
4. Step 4: Simplify right side
   1,636,128x = 12,247,760,102,400
5. Step 5: Solve for x
   x = 12,247,760,102,400/1,636,128
6. Step 6: Final answer
   x = 7,485,820.24