Finding the Third Proportional to 190,642.50 and 376,498.50

Step by Step Solution

1. Step 1: Write the proportion equation
   190,642.50 : 376,498.50 = 376,498.50 : x
2. Step 2: Convert to fraction form
   190,642.50/376,498.50 = 376,498.50/x
3. Step 3: Cross multiply
   190,642.50x = 376,498.50 × 376,498.50
4. Step 4: Simplify right side
   190,642.50x = 141,751,120,502.25
5. Step 5: Solve for x
   x = 141,751,120,502.25/190,642.50
6. Step 6: Final answer
   x = 743,544.18