Finding the Third Proportional to 10,620 and 22,918.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,620 : 22,918.50 = 22,918.50 : x
2. Step 2: Convert to fraction form
   10,620/22,918.50 = 22,918.50/x
3. Step 3: Cross multiply
   10,620x = 22,918.50 × 22,918.50
4. Step 4: Simplify right side
   10,620x = 525,257,642.25
5. Step 5: Solve for x
   x = 525,257,642.25/10,620
6. Step 6: Final answer
   x = 49,459.29