Finding the Third Proportional to 91,300.50 and 128,196

Step by Step Solution

1. Step 1: Write the proportion equation
   91,300.50 : 128,196 = 128,196 : x
2. Step 2: Convert to fraction form
   91,300.50/128,196 = 128,196/x
3. Step 3: Cross multiply
   91,300.50x = 128,196 × 128,196
4. Step 4: Simplify right side
   91,300.50x = 16,434,214,416
5. Step 5: Solve for x
   x = 16,434,214,416/91,300.50
6. Step 6: Final answer
   x = 180,001.36