Finding the Third Proportional to 113,811 and 172,281.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,811 : 172,281.50 = 172,281.50 : x
2. Step 2: Convert to fraction form
   113,811/172,281.50 = 172,281.50/x
3. Step 3: Cross multiply
   113,811x = 172,281.50 × 172,281.50
4. Step 4: Simplify right side
   113,811x = 29,680,915,242.25
5. Step 5: Solve for x
   x = 29,680,915,242.25/113,811
6. Step 6: Final answer
   x = 260,791.27