Finding the Third Proportional to 12,120 and 25,343.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,120 : 25,343.50 = 25,343.50 : x
2. Step 2: Convert to fraction form
   12,120/25,343.50 = 25,343.50/x
3. Step 3: Cross multiply
   12,120x = 25,343.50 × 25,343.50
4. Step 4: Simplify right side
   12,120x = 642,292,992.25
5. Step 5: Solve for x
   x = 642,292,992.25/12,120
6. Step 6: Final answer
   x = 52,994.47