Finding the Third Proportional to 20,396.81 and 30,407.06

Step by Step Solution

1. Step 1: Write the proportion equation
   20,396.81 : 30,407.06 = 30,407.06 : x
2. Step 2: Convert to fraction form
   20,396.81/30,407.06 = 30,407.06/x
3. Step 3: Cross multiply
   20,396.81x = 30,407.06 × 30,407.06
4. Step 4: Simplify right side
   20,396.81x = 924,589,449.88
5. Step 5: Solve for x
   x = 924,589,449.88/20,396.81
6. Step 6: Final answer
   x = 45,330.10