Finding the Third Proportional to 2,129,925 and 4,584,621

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129,925 : 4,584,621 = 4,584,621 : x
2. Step 2: Convert to fraction form
   2,129,925/4,584,621 = 4,584,621/x
3. Step 3: Cross multiply
   2,129,925x = 4,584,621 × 4,584,621
4. Step 4: Simplify right side
   2,129,925x = 21,018,749,713,641
5. Step 5: Solve for x
   x = 21,018,749,713,641/2,129,925
6. Step 6: Final answer
   x = 9,868,305.09