Finding the Third Proportional to 172,700.50 and 266,434

Step by Step Solution

1. Step 1: Write the proportion equation
   172,700.50 : 266,434 = 266,434 : x
2. Step 2: Convert to fraction form
   172,700.50/266,434 = 266,434/x
3. Step 3: Cross multiply
   172,700.50x = 266,434 × 266,434
4. Step 4: Simplify right side
   172,700.50x = 70,987,076,356
5. Step 5: Solve for x
   x = 70,987,076,356/172,700.50
6. Step 6: Final answer
   x = 411,041.52