Finding the Third Proportional to 172,085.50 and 369,072

Step by Step Solution

1. Step 1: Write the proportion equation
   172,085.50 : 369,072 = 369,072 : x
2. Step 2: Convert to fraction form
   172,085.50/369,072 = 369,072/x
3. Step 3: Cross multiply
   172,085.50x = 369,072 × 369,072
4. Step 4: Simplify right side
   172,085.50x = 136,214,141,184
5. Step 5: Solve for x
   x = 136,214,141,184/172,085.50
6. Step 6: Final answer
   x = 791,549.21