Finding the Third Proportional to 2,219,864 and 4,785,280

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219,864 : 4,785,280 = 4,785,280 : x
2. Step 2: Convert to fraction form
   2,219,864/4,785,280 = 4,785,280/x
3. Step 3: Cross multiply
   2,219,864x = 4,785,280 × 4,785,280
4. Step 4: Simplify right side
   2,219,864x = 22,898,904,678,400
5. Step 5: Solve for x
   x = 22,898,904,678,400/2,219,864
6. Step 6: Final answer
   x = 10,315,453.86