Finding the Third Proportional to 9,971,993 and 21,433,513

Step by Step Solution

1. Step 1: Write the proportion equation
   9,971,993 : 21,433,513 = 21,433,513 : x
2. Step 2: Convert to fraction form
   9,971,993/21,433,513 = 21,433,513/x
3. Step 3: Cross multiply
   9,971,993x = 21,433,513 × 21,433,513
4. Step 4: Simplify right side
   9,971,993x = 459,395,479,521,169
5. Step 5: Solve for x
   x = 459,395,479,521,169/9,971,993
6. Step 6: Final answer
   x = 46,068,572.20