Finding the Third Proportional to 12,843 and 30,910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,843 : 30,910.50 = 30,910.50 : x
2. Step 2: Convert to fraction form
   12,843/30,910.50 = 30,910.50/x
3. Step 3: Cross multiply
   12,843x = 30,910.50 × 30,910.50
4. Step 4: Simplify right side
   12,843x = 955,459,010.25
5. Step 5: Solve for x
   x = 955,459,010.25/12,843
6. Step 6: Final answer
   x = 74,395.31