Finding the Third Proportional to 191,985 and 270,238.50

Step by Step Solution

1. Step 1: Write the proportion equation
   191,985 : 270,238.50 = 270,238.50 : x
2. Step 2: Convert to fraction form
   191,985/270,238.50 = 270,238.50/x
3. Step 3: Cross multiply
   191,985x = 270,238.50 × 270,238.50
4. Step 4: Simplify right side
   191,985x = 73,028,846,882.25
5. Step 5: Solve for x
   x = 73,028,846,882.25/191,985
6. Step 6: Final answer
   x = 380,388.30