Finding the Third Proportional to 2,121,789 and 4,341,627

Step by Step Solution

1. Step 1: Write the proportion equation
   2,121,789 : 4,341,627 = 4,341,627 : x
2. Step 2: Convert to fraction form
   2,121,789/4,341,627 = 4,341,627/x
3. Step 3: Cross multiply
   2,121,789x = 4,341,627 × 4,341,627
4. Step 4: Simplify right side
   2,121,789x = 18,849,725,007,129
5. Step 5: Solve for x
   x = 18,849,725,007,129/2,121,789
6. Step 6: Final answer
   x = 8,883,882.90