Finding the Third Proportional to 10,172.50 and 20,998.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,172.50 : 20,998.50 = 20,998.50 : x
2. Step 2: Convert to fraction form
   10,172.50/20,998.50 = 20,998.50/x
3. Step 3: Cross multiply
   10,172.50x = 20,998.50 × 20,998.50
4. Step 4: Simplify right side
   10,172.50x = 440,937,002.25
5. Step 5: Solve for x
   x = 440,937,002.25/10,172.50
6. Step 6: Final answer
   x = 43,345.98