Finding the Third Proportional to 60,191 and 128,158.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,191 : 128,158.50 = 128,158.50 : x
2. Step 2: Convert to fraction form
   60,191/128,158.50 = 128,158.50/x
3. Step 3: Cross multiply
   60,191x = 128,158.50 × 128,158.50
4. Step 4: Simplify right side
   60,191x = 16,424,601,122.25
5. Step 5: Solve for x
   x = 16,424,601,122.25/60,191
6. Step 6: Final answer
   x = 272,874.70