Finding the Third Proportional to 21,085.31 and 45,296.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,085.31 : 45,296.72 = 45,296.72 : x
2. Step 2: Convert to fraction form
   21,085.31/45,296.72 = 45,296.72/x
3. Step 3: Cross multiply
   21,085.31x = 45,296.72 × 45,296.72
4. Step 4: Simplify right side
   21,085.31x = 2,051,792,729.52
5. Step 5: Solve for x
   x = 2,051,792,729.52/21,085.31
6. Step 6: Final answer
   x = 97,309.10