Finding the Third Proportional to 21,120 and 45,726

Step by Step Solution

1. Step 1: Write the proportion equation
   21,120 : 45,726 = 45,726 : x
2. Step 2: Convert to fraction form
   21,120/45,726 = 45,726/x
3. Step 3: Cross multiply
   21,120x = 45,726 × 45,726
4. Step 4: Simplify right side
   21,120x = 2,090,867,076
5. Step 5: Solve for x
   x = 2,090,867,076/21,120
6. Step 6: Final answer
   x = 98,999.39