Finding the Third Proportional to 5,321,332 and 8,221,372

Step by Step Solution

1. Step 1: Write the proportion equation
   5,321,332 : 8,221,372 = 8,221,372 : x
2. Step 2: Convert to fraction form
   5,321,332/8,221,372 = 8,221,372/x
3. Step 3: Cross multiply
   5,321,332x = 8,221,372 × 8,221,372
4. Step 4: Simplify right side
   5,321,332x = 67,590,957,562,384
5. Step 5: Solve for x
   x = 67,590,957,562,384/5,321,332
6. Step 6: Final answer
   x = 12,701,886.96