Finding the Third Proportional to 109,155.75 and 164,139

Step by Step Solution

1. Step 1: Write the proportion equation
   109,155.75 : 164,139 = 164,139 : x
2. Step 2: Convert to fraction form
   109,155.75/164,139 = 164,139/x
3. Step 3: Cross multiply
   109,155.75x = 164,139 × 164,139
4. Step 4: Simplify right side
   109,155.75x = 26,941,611,321
5. Step 5: Solve for x
   x = 26,941,611,321/109,155.75
6. Step 6: Final answer
   x = 246,818.07