Finding the Third Proportional to 101,128.50 and 145,668.38

Step by Step Solution

1. Step 1: Write the proportion equation
   101,128.50 : 145,668.38 = 145,668.38 : x
2. Step 2: Convert to fraction form
   101,128.50/145,668.38 = 145,668.38/x
3. Step 3: Cross multiply
   101,128.50x = 145,668.38 × 145,668.38
4. Step 4: Simplify right side
   101,128.50x = 21,219,275,475.14
5. Step 5: Solve for x
   x = 21,219,275,475.14/101,128.50
6. Step 6: Final answer
   x = 209,824.88