Finding the Third Proportional to 20,981.53 and 40,899.94

Step by Step Solution

1. Step 1: Write the proportion equation
   20,981.53 : 40,899.94 = 40,899.94 : x
2. Step 2: Convert to fraction form
   20,981.53/40,899.94 = 40,899.94/x
3. Step 3: Cross multiply
   20,981.53x = 40,899.94 × 40,899.94
4. Step 4: Simplify right side
   20,981.53x = 1,672,804,887.50
5. Step 5: Solve for x
   x = 1,672,804,887.50/20,981.53
6. Step 6: Final answer
   x = 79,727.49