Finding the Third Proportional to 128,280 and 191,052

Step by Step Solution

1. Step 1: Write the proportion equation
   128,280 : 191,052 = 191,052 : x
2. Step 2: Convert to fraction form
   128,280/191,052 = 191,052/x
3. Step 3: Cross multiply
   128,280x = 191,052 × 191,052
4. Step 4: Simplify right side
   128,280x = 36,500,866,704
5. Step 5: Solve for x
   x = 36,500,866,704/128,280
6. Step 6: Final answer
   x = 284,540.59