Finding the Third Proportional to 3,889,622 and 8,487,832

Step by Step Solution

1. Step 1: Write the proportion equation
   3,889,622 : 8,487,832 = 8,487,832 : x
2. Step 2: Convert to fraction form
   3,889,622/8,487,832 = 8,487,832/x
3. Step 3: Cross multiply
   3,889,622x = 8,487,832 × 8,487,832
4. Step 4: Simplify right side
   3,889,622x = 72,043,292,060,224
5. Step 5: Solve for x
   x = 72,043,292,060,224/3,889,622
6. Step 6: Final answer
   x = 18,521,926.31