Finding the Third Proportional to 79,128 and 186,790.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,128 : 186,790.50 = 186,790.50 : x
2. Step 2: Convert to fraction form
   79,128/186,790.50 = 186,790.50/x
3. Step 3: Cross multiply
   79,128x = 186,790.50 × 186,790.50
4. Step 4: Simplify right side
   79,128x = 34,890,690,890.25
5. Step 5: Solve for x
   x = 34,890,690,890.25/79,128
6. Step 6: Final answer
   x = 440,939.88