Finding the Third Proportional to 12,365.78 and 29,161.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,365.78 : 29,161.47 = 29,161.47 : x
2. Step 2: Convert to fraction form
   12,365.78/29,161.47 = 29,161.47/x
3. Step 3: Cross multiply
   12,365.78x = 29,161.47 × 29,161.47
4. Step 4: Simplify right side
   12,365.78x = 850,391,259.66
5. Step 5: Solve for x
   x = 850,391,259.66/12,365.78
6. Step 6: Final answer
   x = 68,769.72