Finding the Third Proportional to 91,272 and 196,036.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,272 : 196,036.50 = 196,036.50 : x
2. Step 2: Convert to fraction form
   91,272/196,036.50 = 196,036.50/x
3. Step 3: Cross multiply
   91,272x = 196,036.50 × 196,036.50
4. Step 4: Simplify right side
   91,272x = 38,430,309,332.25
5. Step 5: Solve for x
   x = 38,430,309,332.25/91,272
6. Step 6: Final answer
   x = 421,052.56