Finding the Third Proportional to 60,729.75 and 91,641.38

Step by Step Solution

1. Step 1: Write the proportion equation
   60,729.75 : 91,641.38 = 91,641.38 : x
2. Step 2: Convert to fraction form
   60,729.75/91,641.38 = 91,641.38/x
3. Step 3: Cross multiply
   60,729.75x = 91,641.38 × 91,641.38
4. Step 4: Simplify right side
   60,729.75x = 8,398,141,611.89
5. Step 5: Solve for x
   x = 8,398,141,611.89/60,729.75
6. Step 6: Final answer
   x = 138,287.11