Finding the Third Proportional to 10,427,438 and 21,808,264

Step by Step Solution

1. Step 1: Write the proportion equation
   10,427,438 : 21,808,264 = 21,808,264 : x
2. Step 2: Convert to fraction form
   10,427,438/21,808,264 = 21,808,264/x
3. Step 3: Cross multiply
   10,427,438x = 21,808,264 × 21,808,264
4. Step 4: Simplify right side
   10,427,438x = 475,600,378,693,696
5. Step 5: Solve for x
   x = 475,600,378,693,696/10,427,438
6. Step 6: Final answer
   x = 45,610,472.94