Finding the Third Proportional to 106,218 and 217,336.50

Step by Step Solution

1. Step 1: Write the proportion equation
   106,218 : 217,336.50 = 217,336.50 : x
2. Step 2: Convert to fraction form
   106,218/217,336.50 = 217,336.50/x
3. Step 3: Cross multiply
   106,218x = 217,336.50 × 217,336.50
4. Step 4: Simplify right side
   106,218x = 47,235,154,232.25
5. Step 5: Solve for x
   x = 47,235,154,232.25/106,218
6. Step 6: Final answer
   x = 444,700.09