Finding the Third Proportional to 3,570,576 and 8,427,389

Step by Step Solution

1. Step 1: Write the proportion equation
   3,570,576 : 8,427,389 = 8,427,389 : x
2. Step 2: Convert to fraction form
   3,570,576/8,427,389 = 8,427,389/x
3. Step 3: Cross multiply
   3,570,576x = 8,427,389 × 8,427,389
4. Step 4: Simplify right side
   3,570,576x = 71,020,885,357,321
5. Step 5: Solve for x
   x = 71,020,885,357,321/3,570,576
6. Step 6: Final answer
   x = 19,890,596.18