Finding the Third Proportional to 9,973,086 and 21,520,812

Step by Step Solution

1. Step 1: Write the proportion equation
   9,973,086 : 21,520,812 = 21,520,812 : x
2. Step 2: Convert to fraction form
   9,973,086/21,520,812 = 21,520,812/x
3. Step 3: Cross multiply
   9,973,086x = 21,520,812 × 21,520,812
4. Step 4: Simplify right side
   9,973,086x = 463,145,349,139,344
5. Step 5: Solve for x
   x = 463,145,349,139,344/9,973,086
6. Step 6: Final answer
   x = 46,439,522.24