Finding the Third Proportional to 12,699.38 and 29,206.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,699.38 : 29,206.50 = 29,206.50 : x
2. Step 2: Convert to fraction form
   12,699.38/29,206.50 = 29,206.50/x
3. Step 3: Cross multiply
   12,699.38x = 29,206.50 × 29,206.50
4. Step 4: Simplify right side
   12,699.38x = 853,019,642.25
5. Step 5: Solve for x
   x = 853,019,642.25/12,699.38
6. Step 6: Final answer
   x = 67,170.21