Finding the Third Proportional to 2,090,421 and 4,579,200

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090,421 : 4,579,200 = 4,579,200 : x
2. Step 2: Convert to fraction form
   2,090,421/4,579,200 = 4,579,200/x
3. Step 3: Cross multiply
   2,090,421x = 4,579,200 × 4,579,200
4. Step 4: Simplify right side
   2,090,421x = 20,969,072,640,000
5. Step 5: Solve for x
   x = 20,969,072,640,000/2,090,421
6. Step 6: Final answer
   x = 10,031,028.51