Finding the Third Proportional to 2,138,520 and 4,453,964

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138,520 : 4,453,964 = 4,453,964 : x
2. Step 2: Convert to fraction form
   2,138,520/4,453,964 = 4,453,964/x
3. Step 3: Cross multiply
   2,138,520x = 4,453,964 × 4,453,964
4. Step 4: Simplify right side
   2,138,520x = 19,837,795,313,296
5. Step 5: Solve for x
   x = 19,837,795,313,296/2,138,520
6. Step 6: Final answer
   x = 9,276,413.27