Finding the Third Proportional to 9,986,310 and 21,515,274

Step by Step Solution

1. Step 1: Write the proportion equation
   9,986,310 : 21,515,274 = 21,515,274 : x
2. Step 2: Convert to fraction form
   9,986,310/21,515,274 = 21,515,274/x
3. Step 3: Cross multiply
   9,986,310x = 21,515,274 × 21,515,274
4. Step 4: Simplify right side
   9,986,310x = 462,907,015,295,076
5. Step 5: Solve for x
   x = 462,907,015,295,076/9,986,310
6. Step 6: Final answer
   x = 46,354,160.38