Finding the Third Proportional to 3,817,139 and 8,320,144

Step by Step Solution

1. Step 1: Write the proportion equation
   3,817,139 : 8,320,144 = 8,320,144 : x
2. Step 2: Convert to fraction form
   3,817,139/8,320,144 = 8,320,144/x
3. Step 3: Cross multiply
   3,817,139x = 8,320,144 × 8,320,144
4. Step 4: Simplify right side
   3,817,139x = 69,224,796,180,736
5. Step 5: Solve for x
   x = 69,224,796,180,736/3,817,139
6. Step 6: Final answer
   x = 18,135,256.85