Finding the Third Proportional to 10,260,470 and 21,679,564

Step by Step Solution

1. Step 1: Write the proportion equation
   10,260,470 : 21,679,564 = 21,679,564 : x
2. Step 2: Convert to fraction form
   10,260,470/21,679,564 = 21,679,564/x
3. Step 3: Cross multiply
   10,260,470x = 21,679,564 × 21,679,564
4. Step 4: Simplify right side
   10,260,470x = 470,003,495,230,096
5. Step 5: Solve for x
   x = 470,003,495,230,096/10,260,470
6. Step 6: Final answer
   x = 45,807,209.15