Finding the Third Proportional to 12,631.50 and 21,073.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,631.50 : 21,073.50 = 21,073.50 : x
2. Step 2: Convert to fraction form
   12,631.50/21,073.50 = 21,073.50/x
3. Step 3: Cross multiply
   12,631.50x = 21,073.50 × 21,073.50
4. Step 4: Simplify right side
   12,631.50x = 444,092,402.25
5. Step 5: Solve for x
   x = 444,092,402.25/12,631.50
6. Step 6: Final answer
   x = 35,157.53