Finding the Third Proportional to 9,974,778 and 21,488,308

Step by Step Solution

1. Step 1: Write the proportion equation
   9,974,778 : 21,488,308 = 21,488,308 : x
2. Step 2: Convert to fraction form
   9,974,778/21,488,308 = 21,488,308/x
3. Step 3: Cross multiply
   9,974,778x = 21,488,308 × 21,488,308
4. Step 4: Simplify right side
   9,974,778x = 461,747,380,702,864
5. Step 5: Solve for x
   x = 461,747,380,702,864/9,974,778
6. Step 6: Final answer
   x = 46,291,494.48