Finding the Third Proportional to 10,521 and 14,875.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,521 : 14,875.50 = 14,875.50 : x
2. Step 2: Convert to fraction form
   10,521/14,875.50 = 14,875.50/x
3. Step 3: Cross multiply
   10,521x = 14,875.50 × 14,875.50
4. Step 4: Simplify right side
   10,521x = 221,280,500.25
5. Step 5: Solve for x
   x = 221,280,500.25/10,521
6. Step 6: Final answer
   x = 21,032.27