Finding the Third Proportional to 21,115.69 and 45,906.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,115.69 : 45,906.75 = 45,906.75 : x
2. Step 2: Convert to fraction form
   21,115.69/45,906.75 = 45,906.75/x
3. Step 3: Cross multiply
   21,115.69x = 45,906.75 × 45,906.75
4. Step 4: Simplify right side
   21,115.69x = 2,107,429,695.56
5. Step 5: Solve for x
   x = 2,107,429,695.56/21,115.69
6. Step 6: Final answer
   x = 99,803.98