Finding the Third Proportional to 98,738.50 and 216,783.50

Step by Step Solution

1. Step 1: Write the proportion equation
   98,738.50 : 216,783.50 = 216,783.50 : x
2. Step 2: Convert to fraction form
   98,738.50/216,783.50 = 216,783.50/x
3. Step 3: Cross multiply
   98,738.50x = 216,783.50 × 216,783.50
4. Step 4: Simplify right side
   98,738.50x = 46,995,085,872.25
5. Step 5: Solve for x
   x = 46,995,085,872.25/98,738.50
6. Step 6: Final answer
   x = 475,955.03