Finding the Third Proportional to 190,900.50 and 376,980

Step by Step Solution

1. Step 1: Write the proportion equation
   190,900.50 : 376,980 = 376,980 : x
2. Step 2: Convert to fraction form
   190,900.50/376,980 = 376,980/x
3. Step 3: Cross multiply
   190,900.50x = 376,980 × 376,980
4. Step 4: Simplify right side
   190,900.50x = 142,113,920,400
5. Step 5: Solve for x
   x = 142,113,920,400/190,900.50
6. Step 6: Final answer
   x = 744,439.75