Finding the Third Proportional to 91,770.50 and 141,839.75

Step by Step Solution

1. Step 1: Write the proportion equation
   91,770.50 : 141,839.75 = 141,839.75 : x
2. Step 2: Convert to fraction form
   91,770.50/141,839.75 = 141,839.75/x
3. Step 3: Cross multiply
   91,770.50x = 141,839.75 × 141,839.75
4. Step 4: Simplify right side
   91,770.50x = 20,118,514,680.06
5. Step 5: Solve for x
   x = 20,118,514,680.06/91,770.50
6. Step 6: Final answer
   x = 219,226.38