Finding the Third Proportional to 2,158,335 and 4,662,486

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,335 : 4,662,486 = 4,662,486 : x
2. Step 2: Convert to fraction form
   2,158,335/4,662,486 = 4,662,486/x
3. Step 3: Cross multiply
   2,158,335x = 4,662,486 × 4,662,486
4. Step 4: Simplify right side
   2,158,335x = 21,738,775,700,196
5. Step 5: Solve for x
   x = 21,738,775,700,196/2,158,335
6. Step 6: Final answer
   x = 10,072,011.85