Finding the Third Proportional to 80,490 and 174,818.50

Step by Step Solution

1. Step 1: Write the proportion equation
   80,490 : 174,818.50 = 174,818.50 : x
2. Step 2: Convert to fraction form
   80,490/174,818.50 = 174,818.50/x
3. Step 3: Cross multiply
   80,490x = 174,818.50 × 174,818.50
4. Step 4: Simplify right side
   80,490x = 30,561,507,942.25
5. Step 5: Solve for x
   x = 30,561,507,942.25/80,490
6. Step 6: Final answer
   x = 379,693.23