Finding the Third Proportional to 99,703 and 218,785.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,703 : 218,785.50 = 218,785.50 : x
2. Step 2: Convert to fraction form
   99,703/218,785.50 = 218,785.50/x
3. Step 3: Cross multiply
   99,703x = 218,785.50 × 218,785.50
4. Step 4: Simplify right side
   99,703x = 47,867,095,010.25
5. Step 5: Solve for x
   x = 47,867,095,010.25/99,703
6. Step 6: Final answer
   x = 480,096.84