Finding the Third Proportional to 4,319,123 and 9,999,039

Step by Step Solution

1. Step 1: Write the proportion equation
   4,319,123 : 9,999,039 = 9,999,039 : x
2. Step 2: Convert to fraction form
   4,319,123/9,999,039 = 9,999,039/x
3. Step 3: Cross multiply
   4,319,123x = 9,999,039 × 9,999,039
4. Step 4: Simplify right side
   4,319,123x = 99,980,780,923,521
5. Step 5: Solve for x
   x = 99,980,780,923,521/4,319,123
6. Step 6: Final answer
   x = 23,148,398.63