Finding the Third Proportional to 186,255 and 389,371.50

Step by Step Solution

1. Step 1: Write the proportion equation
   186,255 : 389,371.50 = 389,371.50 : x
2. Step 2: Convert to fraction form
   186,255/389,371.50 = 389,371.50/x
3. Step 3: Cross multiply
   186,255x = 389,371.50 × 389,371.50
4. Step 4: Simplify right side
   186,255x = 151,610,165,012.25
5. Step 5: Solve for x
   x = 151,610,165,012.25/186,255
6. Step 6: Final answer
   x = 813,992.46