Finding the Third Proportional to 3,867,773 and 8,378,362

Step by Step Solution

1. Step 1: Write the proportion equation
   3,867,773 : 8,378,362 = 8,378,362 : x
2. Step 2: Convert to fraction form
   3,867,773/8,378,362 = 8,378,362/x
3. Step 3: Cross multiply
   3,867,773x = 8,378,362 × 8,378,362
4. Step 4: Simplify right side
   3,867,773x = 70,196,949,803,044
5. Step 5: Solve for x
   x = 70,196,949,803,044/3,867,773
6. Step 6: Final answer
   x = 18,149,190.71