Finding the Third Proportional to 116,998.50 and 171,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116,998.50 : 171,109.50 = 171,109.50 : x
2. Step 2: Convert to fraction form
   116,998.50/171,109.50 = 171,109.50/x
3. Step 3: Cross multiply
   116,998.50x = 171,109.50 × 171,109.50
4. Step 4: Simplify right side
   116,998.50x = 29,278,460,990.25
5. Step 5: Solve for x
   x = 29,278,460,990.25/116,998.50
6. Step 6: Final answer
   x = 250,246.46