Finding the Third Proportional to 10,870.50 and 14,358.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,870.50 : 14,358.75 = 14,358.75 : x
2. Step 2: Convert to fraction form
   10,870.50/14,358.75 = 14,358.75/x
3. Step 3: Cross multiply
   10,870.50x = 14,358.75 × 14,358.75
4. Step 4: Simplify right side
   10,870.50x = 206,173,701.56
5. Step 5: Solve for x
   x = 206,173,701.56/10,870.50
6. Step 6: Final answer
   x = 18,966.35