Finding the Third Proportional to 2,175,644 and 4,712,872

Step by Step Solution

1. Step 1: Write the proportion equation
   2,175,644 : 4,712,872 = 4,712,872 : x
2. Step 2: Convert to fraction form
   2,175,644/4,712,872 = 4,712,872/x
3. Step 3: Cross multiply
   2,175,644x = 4,712,872 × 4,712,872
4. Step 4: Simplify right side
   2,175,644x = 22,211,162,488,384
5. Step 5: Solve for x
   x = 22,211,162,488,384/2,175,644
6. Step 6: Final answer
   x = 10,209,005.93