Finding the Third Proportional to 9,815,499 and 20,890,710

Step by Step Solution

1. Step 1: Write the proportion equation
   9,815,499 : 20,890,710 = 20,890,710 : x
2. Step 2: Convert to fraction form
   9,815,499/20,890,710 = 20,890,710/x
3. Step 3: Cross multiply
   9,815,499x = 20,890,710 × 20,890,710
4. Step 4: Simplify right side
   9,815,499x = 436,421,764,304,100
5. Step 5: Solve for x
   x = 436,421,764,304,100/9,815,499
6. Step 6: Final answer
   x = 44,462,514.26