Finding the Third Proportional to 5,471,394 and 8,210,007

Step by Step Solution

1. Step 1: Write the proportion equation
   5,471,394 : 8,210,007 = 8,210,007 : x
2. Step 2: Convert to fraction form
   5,471,394/8,210,007 = 8,210,007/x
3. Step 3: Cross multiply
   5,471,394x = 8,210,007 × 8,210,007
4. Step 4: Simplify right side
   5,471,394x = 67,404,214,940,049
5. Step 5: Solve for x
   x = 67,404,214,940,049/5,471,394
6. Step 6: Final answer
   x = 12,319,386.05