Finding the Third Proportional to 162,255 and 217,039.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,255 : 217,039.50 = 217,039.50 : x
2. Step 2: Convert to fraction form
   162,255/217,039.50 = 217,039.50/x
3. Step 3: Cross multiply
   162,255x = 217,039.50 × 217,039.50
4. Step 4: Simplify right side
   162,255x = 47,106,144,560.25
5. Step 5: Solve for x
   x = 47,106,144,560.25/162,255
6. Step 6: Final answer
   x = 290,321.68