Finding the Third Proportional to 171,242 and 371,664.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,242 : 371,664.50 = 371,664.50 : x
2. Step 2: Convert to fraction form
   171,242/371,664.50 = 371,664.50/x
3. Step 3: Cross multiply
   171,242x = 371,664.50 × 371,664.50
4. Step 4: Simplify right side
   171,242x = 138,134,500,560.25
5. Step 5: Solve for x
   x = 138,134,500,560.25/171,242
6. Step 6: Final answer
   x = 806,662.50