Finding the Third Proportional to 10,427,470 and 21,808,328

Step by Step Solution

1. Step 1: Write the proportion equation
   10,427,470 : 21,808,328 = 21,808,328 : x
2. Step 2: Convert to fraction form
   10,427,470/21,808,328 = 21,808,328/x
3. Step 3: Cross multiply
   10,427,470x = 21,808,328 × 21,808,328
4. Step 4: Simplify right side
   10,427,470x = 475,603,170,155,584
5. Step 5: Solve for x
   x = 475,603,170,155,584/10,427,470
6. Step 6: Final answer
   x = 45,610,600.67