Finding the Third Proportional to 3,953,818 and 8,632,627

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953,818 : 8,632,627 = 8,632,627 : x
2. Step 2: Convert to fraction form
   3,953,818/8,632,627 = 8,632,627/x
3. Step 3: Cross multiply
   3,953,818x = 8,632,627 × 8,632,627
4. Step 4: Simplify right side
   3,953,818x = 74,522,248,921,129
5. Step 5: Solve for x
   x = 74,522,248,921,129/3,953,818
6. Step 6: Final answer
   x = 18,848,173.82