Finding the Third Proportional to 217,385 and 464,620.50

Step by Step Solution

1. Step 1: Write the proportion equation
   217,385 : 464,620.50 = 464,620.50 : x
2. Step 2: Convert to fraction form
   217,385/464,620.50 = 464,620.50/x
3. Step 3: Cross multiply
   217,385x = 464,620.50 × 464,620.50
4. Step 4: Simplify right side
   217,385x = 215,872,209,020.25
5. Step 5: Solve for x
   x = 215,872,209,020.25/217,385
6. Step 6: Final answer
   x = 993,040.96