Finding the Third Proportional to 3,819,138 and 8,319,972

Step by Step Solution

1. Step 1: Write the proportion equation
   3,819,138 : 8,319,972 = 8,319,972 : x
2. Step 2: Convert to fraction form
   3,819,138/8,319,972 = 8,319,972/x
3. Step 3: Cross multiply
   3,819,138x = 8,319,972 × 8,319,972
4. Step 4: Simplify right side
   3,819,138x = 69,221,934,080,784
5. Step 5: Solve for x
   x = 69,221,934,080,784/3,819,138
6. Step 6: Final answer
   x = 18,125,015.14