Finding the Third Proportional to 91,148 and 142,658.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,148 : 142,658.50 = 142,658.50 : x
2. Step 2: Convert to fraction form
   91,148/142,658.50 = 142,658.50/x
3. Step 3: Cross multiply
   91,148x = 142,658.50 × 142,658.50
4. Step 4: Simplify right side
   91,148x = 20,351,447,622.25
5. Step 5: Solve for x
   x = 20,351,447,622.25/91,148
6. Step 6: Final answer
   x = 223,279.15