Finding the Third Proportional to 172,548.98 and 369,086.63

Step by Step Solution

1. Step 1: Write the proportion equation
   172,548.98 : 369,086.63 = 369,086.63 : x
2. Step 2: Convert to fraction form
   172,548.98/369,086.63 = 369,086.63/x
3. Step 3: Cross multiply
   172,548.98x = 369,086.63 × 369,086.63
4. Step 4: Simplify right side
   172,548.98x = 136,224,936,753.89
5. Step 5: Solve for x
   x = 136,224,936,753.89/172,548.98
6. Step 6: Final answer
   x = 789,485.59