Finding the Third Proportional to 4,086,501 and 8,671,123

Step by Step Solution

1. Step 1: Write the proportion equation
   4,086,501 : 8,671,123 = 8,671,123 : x
2. Step 2: Convert to fraction form
   4,086,501/8,671,123 = 8,671,123/x
3. Step 3: Cross multiply
   4,086,501x = 8,671,123 × 8,671,123
4. Step 4: Simplify right side
   4,086,501x = 75,188,374,081,129
5. Step 5: Solve for x
   x = 75,188,374,081,129/4,086,501
6. Step 6: Final answer
   x = 18,399,206.09