Finding the Third Proportional to 78,937.03 and 172,636.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,937.03 : 172,636.31 = 172,636.31 : x
2. Step 2: Convert to fraction form
   78,937.03/172,636.31 = 172,636.31/x
3. Step 3: Cross multiply
   78,937.03x = 172,636.31 × 172,636.31
4. Step 4: Simplify right side
   78,937.03x = 29,803,296,393.60
5. Step 5: Solve for x
   x = 29,803,296,393.60/78,937.03
6. Step 6: Final answer
   x = 377,557.86