Finding the Third Proportional to 109,218 and 164,830.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,218 : 164,830.50 = 164,830.50 : x
2. Step 2: Convert to fraction form
   109,218/164,830.50 = 164,830.50/x
3. Step 3: Cross multiply
   109,218x = 164,830.50 × 164,830.50
4. Step 4: Simplify right side
   109,218x = 27,169,093,730.25
5. Step 5: Solve for x
   x = 27,169,093,730.25/109,218
6. Step 6: Final answer
   x = 248,760.22