Finding the Third Proportional to 112,711.50 and 172,570.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,711.50 : 172,570.50 = 172,570.50 : x
2. Step 2: Convert to fraction form
   112,711.50/172,570.50 = 172,570.50/x
3. Step 3: Cross multiply
   112,711.50x = 172,570.50 × 172,570.50
4. Step 4: Simplify right side
   112,711.50x = 29,780,577,470.25
5. Step 5: Solve for x
   x = 29,780,577,470.25/112,711.50
6. Step 6: Final answer
   x = 264,219.51