Finding the Third Proportional to 12,498.50 and 19,887

Step by Step Solution

1. Step 1: Write the proportion equation
   12,498.50 : 19,887 = 19,887 : x
2. Step 2: Convert to fraction form
   12,498.50/19,887 = 19,887/x
3. Step 3: Cross multiply
   12,498.50x = 19,887 × 19,887
4. Step 4: Simplify right side
   12,498.50x = 395,492,769
5. Step 5: Solve for x
   x = 395,492,769/12,498.50
6. Step 6: Final answer
   x = 31,643.22