Finding the Third Proportional to 217,317 and 345,793.50

Step by Step Solution

1. Step 1: Write the proportion equation
   217,317 : 345,793.50 = 345,793.50 : x
2. Step 2: Convert to fraction form
   217,317/345,793.50 = 345,793.50/x
3. Step 3: Cross multiply
   217,317x = 345,793.50 × 345,793.50
4. Step 4: Simplify right side
   217,317x = 119,573,144,642.25
5. Step 5: Solve for x
   x = 119,573,144,642.25/217,317
6. Step 6: Final answer
   x = 550,224.53