Finding the Third Proportional to 142,116.19 and 207,628.31

Step by Step Solution

1. Step 1: Write the proportion equation
   142,116.19 : 207,628.31 = 207,628.31 : x
2. Step 2: Convert to fraction form
   142,116.19/207,628.31 = 207,628.31/x
3. Step 3: Cross multiply
   142,116.19x = 207,628.31 × 207,628.31
4. Step 4: Simplify right side
   142,116.19x = 43,109,516,151.60
5. Step 5: Solve for x
   x = 43,109,516,151.60/142,116.19
6. Step 6: Final answer
   x = 303,339.94