Finding the Third Proportional to 2,428.31 and 4,992.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.31 : 4,992.47 = 4,992.47 : x
2. Step 2: Convert to fraction form
   2,428.31/4,992.47 = 4,992.47/x
3. Step 3: Cross multiply
   2,428.31x = 4,992.47 × 4,992.47
4. Step 4: Simplify right side
   2,428.31x = 24,924,744.22
5. Step 5: Solve for x
   x = 24,924,744.22/2,428.31
6. Step 6: Final answer
   x = 10,264.22