Finding the Third Proportional to 77,908.50 and 122,040

Step by Step Solution

1. Step 1: Write the proportion equation
   77,908.50 : 122,040 = 122,040 : x
2. Step 2: Convert to fraction form
   77,908.50/122,040 = 122,040/x
3. Step 3: Cross multiply
   77,908.50x = 122,040 × 122,040
4. Step 4: Simplify right side
   77,908.50x = 14,893,761,600
5. Step 5: Solve for x
   x = 14,893,761,600/77,908.50
6. Step 6: Final answer
   x = 191,169.92