Finding the Third Proportional to 72,645.75 and 109,042.88

Step by Step Solution

1. Step 1: Write the proportion equation
   72,645.75 : 109,042.88 = 109,042.88 : x
2. Step 2: Convert to fraction form
   72,645.75/109,042.88 = 109,042.88/x
3. Step 3: Cross multiply
   72,645.75x = 109,042.88 × 109,042.88
4. Step 4: Simplify right side
   72,645.75x = 11,890,348,588.27
5. Step 5: Solve for x
   x = 11,890,348,588.27/72,645.75
6. Step 6: Final answer
   x = 163,675.76