Finding the Third Proportional to 198,132 and 386,341.50

Step by Step Solution

1. Step 1: Write the proportion equation
   198,132 : 386,341.50 = 386,341.50 : x
2. Step 2: Convert to fraction form
   198,132/386,341.50 = 386,341.50/x
3. Step 3: Cross multiply
   198,132x = 386,341.50 × 386,341.50
4. Step 4: Simplify right side
   198,132x = 149,259,754,622.25
5. Step 5: Solve for x
   x = 149,259,754,622.25/198,132
6. Step 6: Final answer
   x = 753,334.92