Finding the Third Proportional to 172,141.50 and 263,167.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,141.50 : 263,167.50 = 263,167.50 : x
2. Step 2: Convert to fraction form
   172,141.50/263,167.50 = 263,167.50/x
3. Step 3: Cross multiply
   172,141.50x = 263,167.50 × 263,167.50
4. Step 4: Simplify right side
   172,141.50x = 69,257,133,056.25
5. Step 5: Solve for x
   x = 69,257,133,056.25/172,141.50
6. Step 6: Final answer
   x = 402,326.77