Finding the Third Proportional to 12,505 and 19,801.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,505 : 19,801.50 = 19,801.50 : x
2. Step 2: Convert to fraction form
   12,505/19,801.50 = 19,801.50/x
3. Step 3: Cross multiply
   12,505x = 19,801.50 × 19,801.50
4. Step 4: Simplify right side
   12,505x = 392,099,402.25
5. Step 5: Solve for x
   x = 392,099,402.25/12,505
6. Step 6: Final answer
   x = 31,355.41