Finding the Third Proportional to 10,860,340.50 and 21,446,553

Step by Step Solution

1. Step 1: Write the proportion equation
   10,860,340.50 : 21,446,553 = 21,446,553 : x
2. Step 2: Convert to fraction form
   10,860,340.50/21,446,553 = 21,446,553/x
3. Step 3: Cross multiply
   10,860,340.50x = 21,446,553 × 21,446,553
4. Step 4: Simplify right side
   10,860,340.50x = 459,954,635,581,809
5. Step 5: Solve for x
   x = 459,954,635,581,809/10,860,340.50
6. Step 6: Final answer
   x = 42,351,769.32