Finding the Third Proportional to 5,439,098 and 8,158,644

Step by Step Solution

1. Step 1: Write the proportion equation
   5,439,098 : 8,158,644 = 8,158,644 : x
2. Step 2: Convert to fraction form
   5,439,098/8,158,644 = 8,158,644/x
3. Step 3: Cross multiply
   5,439,098x = 8,158,644 × 8,158,644
4. Step 4: Simplify right side
   5,439,098x = 66,563,471,918,736
5. Step 5: Solve for x
   x = 66,563,471,918,736/5,439,098
6. Step 6: Final answer
   x = 12,237,961.50