Finding the Third Proportional to 2,129,857 and 4,584,484

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129,857 : 4,584,484 = 4,584,484 : x
2. Step 2: Convert to fraction form
   2,129,857/4,584,484 = 4,584,484/x
3. Step 3: Cross multiply
   2,129,857x = 4,584,484 × 4,584,484
4. Step 4: Simplify right side
   2,129,857x = 21,017,493,546,256
5. Step 5: Solve for x
   x = 21,017,493,546,256/2,129,857
6. Step 6: Final answer
   x = 9,868,030.36