Finding the Third Proportional to 9,691,873 and 21,144,145

Step by Step Solution

1. Step 1: Write the proportion equation
   9,691,873 : 21,144,145 = 21,144,145 : x
2. Step 2: Convert to fraction form
   9,691,873/21,144,145 = 21,144,145/x
3. Step 3: Cross multiply
   9,691,873x = 21,144,145 × 21,144,145
4. Step 4: Simplify right side
   9,691,873x = 447,074,867,781,025
5. Step 5: Solve for x
   x = 447,074,867,781,025/9,691,873
6. Step 6: Final answer
   x = 46,128,840.91