Finding the Third Proportional to 2,154,911 and 4,688,167

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154,911 : 4,688,167 = 4,688,167 : x
2. Step 2: Convert to fraction form
   2,154,911/4,688,167 = 4,688,167/x
3. Step 3: Cross multiply
   2,154,911x = 4,688,167 × 4,688,167
4. Step 4: Simplify right side
   2,154,911x = 21,978,909,819,889
5. Step 5: Solve for x
   x = 21,978,909,819,889/2,154,911
6. Step 6: Final answer
   x = 10,199,451.31