Finding the Third Proportional to 12,829.50 and 28,109

Step by Step Solution

1. Step 1: Write the proportion equation
   12,829.50 : 28,109 = 28,109 : x
2. Step 2: Convert to fraction form
   12,829.50/28,109 = 28,109/x
3. Step 3: Cross multiply
   12,829.50x = 28,109 × 28,109
4. Step 4: Simplify right side
   12,829.50x = 790,115,881
5. Step 5: Solve for x
   x = 790,115,881/12,829.50
6. Step 6: Final answer
   x = 61,585.87