Finding the Third Proportional to 9,905,860 and 21,570,301

Step by Step Solution

1. Step 1: Write the proportion equation
   9,905,860 : 21,570,301 = 21,570,301 : x
2. Step 2: Convert to fraction form
   9,905,860/21,570,301 = 21,570,301/x
3. Step 3: Cross multiply
   9,905,860x = 21,570,301 × 21,570,301
4. Step 4: Simplify right side
   9,905,860x = 465,277,885,230,601
5. Step 5: Solve for x
   x = 465,277,885,230,601/9,905,860
6. Step 6: Final answer
   x = 46,969,963.76