Finding the Third Proportional to 10,620 and 15,610.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,620 : 15,610.50 = 15,610.50 : x
2. Step 2: Convert to fraction form
   10,620/15,610.50 = 15,610.50/x
3. Step 3: Cross multiply
   10,620x = 15,610.50 × 15,610.50
4. Step 4: Simplify right side
   10,620x = 243,687,710.25
5. Step 5: Solve for x
   x = 243,687,710.25/10,620
6. Step 6: Final answer
   x = 22,946.11