Finding the Third Proportional to 10,427,446 and 21,808,278

Step by Step Solution

1. Step 1: Write the proportion equation
   10,427,446 : 21,808,278 = 21,808,278 : x
2. Step 2: Convert to fraction form
   10,427,446/21,808,278 = 21,808,278/x
3. Step 3: Cross multiply
   10,427,446x = 21,808,278 × 21,808,278
4. Step 4: Simplify right side
   10,427,446x = 475,600,989,325,284
5. Step 5: Solve for x
   x = 475,600,989,325,284/10,427,446
6. Step 6: Final answer
   x = 45,610,496.50