Finding the Third Proportional to 172,153.50 and 369,210

Step by Step Solution

1. Step 1: Write the proportion equation
   172,153.50 : 369,210 = 369,210 : x
2. Step 2: Convert to fraction form
   172,153.50/369,210 = 369,210/x
3. Step 3: Cross multiply
   172,153.50x = 369,210 × 369,210
4. Step 4: Simplify right side
   172,153.50x = 136,316,024,100
5. Step 5: Solve for x
   x = 136,316,024,100/172,153.50
6. Step 6: Final answer
   x = 791,828.36