Finding the Third Proportional to 65,807.50 and 105,979

Step by Step Solution

1. Step 1: Write the proportion equation
   65,807.50 : 105,979 = 105,979 : x
2. Step 2: Convert to fraction form
   65,807.50/105,979 = 105,979/x
3. Step 3: Cross multiply
   65,807.50x = 105,979 × 105,979
4. Step 4: Simplify right side
   65,807.50x = 11,231,548,441
5. Step 5: Solve for x
   x = 11,231,548,441/65,807.50
6. Step 6: Final answer
   x = 170,672.77