Finding the Third Proportional to 109,139.50 and 164,115

Step by Step Solution

1. Step 1: Write the proportion equation
   109,139.50 : 164,115 = 164,115 : x
2. Step 2: Convert to fraction form
   109,139.50/164,115 = 164,115/x
3. Step 3: Cross multiply
   109,139.50x = 164,115 × 164,115
4. Step 4: Simplify right side
   109,139.50x = 26,933,733,225
5. Step 5: Solve for x
   x = 26,933,733,225/109,139.50
6. Step 6: Final answer
   x = 246,782.63